fix: pos profile has no attr 'show_only_available_items' (#23759)

diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.json b/erpnext/accounts/doctype/pos_profile/pos_profile.json
index 4e22218..570111a 100644
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.json
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.json
@@ -14,6 +14,7 @@
   "column_break_9",
   "update_stock",
   "ignore_pricing_rule",
+  "hide_unavailable_items",
   "warehouse",
   "campaign",
   "company_address",
@@ -307,13 +308,19 @@
    "fieldtype": "Check",
    "label": "Update Stock",
    "read_only": 1
+  },
+  {
+   "default": "0",
+   "fieldname": "hide_unavailable_items",
+   "fieldtype": "Check",
+   "label": "Hide Unavailable Items"
   }
  ],
  "icon": "icon-cog",
  "idx": 1,
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2020-10-20 13:16:50.665081",
+ "modified": "2020-10-29 13:18:38.795925",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "POS Profile",
diff --git a/erpnext/selling/page/point_of_sale/point_of_sale.py b/erpnext/selling/page/point_of_sale/point_of_sale.py
index e5b50d7..6b9939e 100644
--- a/erpnext/selling/page/point_of_sale/point_of_sale.py
+++ b/erpnext/selling/page/point_of_sale/point_of_sale.py
@@ -14,11 +14,11 @@
 def get_items(start, page_length, price_list, item_group, pos_profile, search_value=""):
 	data = dict()
 	result = []
-	warehouse, show_only_available_items = "", False
+	warehouse, hide_unavailable_items = "", False
 
 	allow_negative_stock = frappe.db.get_single_value('Stock Settings', 'allow_negative_stock')
 	if not allow_negative_stock:
-		warehouse, show_only_available_items = frappe.db.get_value('POS Profile', pos_profile, ['warehouse', 'show_only_available_items'])
+		warehouse, hide_unavailable_items = frappe.db.get_value('POS Profile', pos_profile, ['warehouse', 'hide_unavailable_items'])
 
 	if not frappe.db.exists('Item Group', item_group):
 		item_group = get_root_of('Item Group')
@@ -48,7 +48,7 @@
 	lft, rgt = frappe.db.get_value('Item Group', item_group, ['lft', 'rgt'])
 
 	bin_join_selection, bin_join_condition = "", ""
-	if show_only_available_items:
+	if hide_unavailable_items:
 		bin_join_selection = ", `tabBin` bin"
 		bin_join_condition = "AND bin.warehouse = %(warehouse)s AND bin.item_code = item.name AND bin.actual_qty > 0"