fix: don't set Company:company:default_currency as default for currency link fields (#25111)

diff --git a/erpnext/hr/doctype/employee_advance/employee_advance.json b/erpnext/hr/doctype/employee_advance/employee_advance.json
index cf6b540..a25a828 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance.json
+++ b/erpnext/hr/doctype/employee_advance/employee_advance.json
@@ -181,7 +181,6 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -201,7 +200,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-11-25 12:01:55.980721",
+ "modified": "2021-03-31 21:31:53.746659",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Employee Advance",
diff --git a/erpnext/hr/doctype/leave_encashment/leave_encashment.json b/erpnext/hr/doctype/leave_encashment/leave_encashment.json
index 83eeae3..ec419ec 100644
--- a/erpnext/hr/doctype/leave_encashment/leave_encashment.json
+++ b/erpnext/hr/doctype/leave_encashment/leave_encashment.json
@@ -130,7 +130,6 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -155,7 +154,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-11-25 11:56:06.777241",
+ "modified": "2021-03-31 21:32:55.492327",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Leave Encashment",
diff --git a/erpnext/payroll/doctype/additional_salary/additional_salary.json b/erpnext/payroll/doctype/additional_salary/additional_salary.json
index 2b29f66..3544244 100644
--- a/erpnext/payroll/doctype/additional_salary/additional_salary.json
+++ b/erpnext/payroll/doctype/additional_salary/additional_salary.json
@@ -163,7 +163,6 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -176,7 +175,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-20 17:51:13.419716",
+ "modified": "2021-03-31 21:33:59.098532",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Additional Salary",
diff --git a/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.json b/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.json
index 4c45580..dcd01b5 100644
--- a/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.json
+++ b/erpnext/payroll/doctype/employee_benefit_application/employee_benefit_application.json
@@ -124,7 +124,6 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -148,7 +147,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-12-14 15:52:08.566418",
+ "modified": "2021-03-31 21:35:08.940087",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Employee Benefit Application",
diff --git a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.js b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.js
index ea9ccd5..e1f8431 100644
--- a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.js
+++ b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.js
@@ -21,7 +21,6 @@
 				callback: function(r) {
 					if (r.message) {
 						frm.set_value('currency', r.message);
-						frm.set_df_property('currency', 'hidden', 0);
 					}
 				}
 			});
diff --git a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.json b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.json
index da24aac..d731ff9 100644
--- a/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.json
+++ b/erpnext/payroll/doctype/employee_benefit_claim/employee_benefit_claim.json
@@ -125,10 +125,9 @@
    "label": "Attachments"
   },
   {
-   "default": "Company:company:default_currency",
+   "depends_on": "eval: doc.employee",
    "fieldname": "currency",
    "fieldtype": "Link",
-   "hidden": 1,
    "label": "Currency",
    "options": "Currency",
    "read_only": 1,
@@ -145,7 +144,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-11-25 11:49:56.097352",
+ "modified": "2021-03-31 21:37:21.024625",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Employee Benefit Claim",
diff --git a/erpnext/payroll/doctype/employee_incentive/employee_incentive.json b/erpnext/payroll/doctype/employee_incentive/employee_incentive.json
index e5b1052..f11e3aa 100644
--- a/erpnext/payroll/doctype/employee_incentive/employee_incentive.json
+++ b/erpnext/payroll/doctype/employee_incentive/employee_incentive.json
@@ -75,7 +75,6 @@
    "reqd": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -95,7 +94,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-20 17:22:16.468042",
+ "modified": "2021-03-31 21:38:20.332316",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Employee Incentive",
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.js b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.js
index 0e0c9b5..fb11875 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.js
+++ b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.js
@@ -47,5 +47,26 @@
 				});
 			}).addClass("btn-primary");
 		}
+	},
+
+	employee: function(frm) {
+		if (frm.doc.employee) {
+			frm.trigger('get_employee_currency');
+		}
+	},
+
+	get_employee_currency: function(frm) {
+		frappe.call({
+			method: "erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment.get_employee_currency",
+			args: {
+				employee: frm.doc.employee,
+			},
+			callback: function(r) {
+				if (r.message) {
+					frm.set_value('currency', r.message);
+					frm.refresh_fields();
+				}
+			}
+		});
 	}
 });
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
index 83d4ae5..bceada3 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
+++ b/erpnext/payroll/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
@@ -108,7 +108,7 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
+   "depends_on": "eval: doc.employee",
    "fieldname": "currency",
    "fieldtype": "Link",
    "label": "Currency",
@@ -119,7 +119,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-20 16:42:24.493761",
+ "modified": "2021-03-31 21:39:59.237361",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Employee Tax Exemption Declaration",
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.js b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.js
index 497f35c..4fb0a37 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.js
+++ b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.js
@@ -58,5 +58,26 @@
 
 	currency: function(frm) {
 		frm.refresh_fields();
-	}
+	},
+
+	employee: function(frm) {
+		if (frm.doc.employee) {
+			frm.trigger('get_employee_currency');
+		}
+	},
+
+	get_employee_currency: function(frm) {
+		frappe.call({
+			method: "erpnext.payroll.doctype.salary_structure_assignment.salary_structure_assignment.get_employee_currency",
+			args: {
+				employee: frm.doc.employee,
+			},
+			callback: function(r) {
+				if (r.message) {
+					frm.set_value('currency', r.message);
+					frm.refresh_fields();
+				}
+			}
+		});
+	},
 });
diff --git a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
index 53f18cb..6770d3e 100644
--- a/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
+++ b/erpnext/payroll/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
@@ -131,7 +131,7 @@
    "read_only": 1
   },
   {
-   "default": "Company:company:default_currency",
+   "depends_on": "eval: doc.employee",
    "fieldname": "currency",
    "fieldtype": "Link",
    "label": "Currency",
@@ -142,7 +142,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-20 16:47:03.410020",
+ "modified": "2021-03-31 21:41:13.723339",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Employee Tax Exemption Proof Submission",
diff --git a/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.json b/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.json
index 9fa261d..935d89f 100644
--- a/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.json
+++ b/erpnext/payroll/doctype/income_tax_slab/income_tax_slab.json
@@ -93,7 +93,7 @@
    "options": "Income Tax Slab Other Charges"
   },
   {
-   "default": "Company:company:default_currency",
+   "fetch_from": "company.default_currency",
    "fieldname": "currency",
    "fieldtype": "Link",
    "label": "Currency",
@@ -104,7 +104,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-19 13:54:24.728075",
+ "modified": "2021-03-31 21:42:08.139520",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Income Tax Slab",
diff --git a/erpnext/payroll/doctype/retention_bonus/retention_bonus.json b/erpnext/payroll/doctype/retention_bonus/retention_bonus.json
index 6647230..65b566f 100644
--- a/erpnext/payroll/doctype/retention_bonus/retention_bonus.json
+++ b/erpnext/payroll/doctype/retention_bonus/retention_bonus.json
@@ -93,7 +93,6 @@
    "reqd": 1
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.employee)",
    "fieldname": "currency",
    "fieldtype": "Link",
@@ -106,7 +105,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-20 17:27:47.003134",
+ "modified": "2021-03-31 21:43:28.363644",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Retention Bonus",
diff --git a/erpnext/payroll/doctype/salary_slip/salary_slip.json b/erpnext/payroll/doctype/salary_slip/salary_slip.json
index 6688368..262b716 100644
--- a/erpnext/payroll/doctype/salary_slip/salary_slip.json
+++ b/erpnext/payroll/doctype/salary_slip/salary_slip.json
@@ -500,7 +500,6 @@
    "fieldtype": "Column Break"
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.salary_structure)",
    "fetch_from": "salary_structure.currency",
    "fieldname": "currency",
@@ -632,7 +631,7 @@
  "idx": 9,
  "is_submittable": 1,
  "links": [],
- "modified": "2021-02-19 11:48:05.383945",
+ "modified": "2021-03-31 21:44:09.772331",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Salary Slip",
diff --git a/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.json b/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.json
index 92bb347..a4e1a5a 100644
--- a/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.json
+++ b/erpnext/payroll/doctype/salary_structure_assignment/salary_structure_assignment.json
@@ -125,7 +125,6 @@
    "options": "Income Tax Slab"
   },
   {
-   "default": "Company:company:default_currency",
    "depends_on": "eval:(doc.docstatus==1 || doc.salary_structure)",
    "fetch_from": "salary_structure.currency",
    "fieldname": "currency",
@@ -146,7 +145,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2020-11-30 18:07:48.251311",
+ "modified": "2021-03-31 21:44:46.267974",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Salary Structure Assignment",