fix(transaction): Add comment-by from frappe session (#20867)

Co-authored-by: prafful1234 <prafful@mntechnique.com>
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.js b/erpnext/buying/doctype/purchase_order/purchase_order.js
index a3264a4..3111a3a 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.js
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.js
@@ -499,7 +499,8 @@
 						reference_doctype: me.frm.doctype,
 						reference_name: me.frm.docname,
 						content: __('Reason for hold: ')+data.reason_for_hold,
-						comment_email: frappe.session.user
+						comment_email: frappe.session.user,
+						comment_by: frappe.session.user_fullname
 					},
 					callback: function(r) {
 						if(!r.exc) {
diff --git a/erpnext/selling/doctype/sales_order/sales_order.js b/erpnext/selling/doctype/sales_order/sales_order.js
index fa765df..61aa608 100644
--- a/erpnext/selling/doctype/sales_order/sales_order.js
+++ b/erpnext/selling/doctype/sales_order/sales_order.js
@@ -664,7 +664,8 @@
 						reference_doctype: me.frm.doctype,
 						reference_name: me.frm.docname,
 						content: __('Reason for hold: ')+data.reason_for_hold,
-						comment_email: frappe.session.user
+						comment_email: frappe.session.user,
+						comment_by: frappe.session.user_fullname
 					},
 					callback: function(r) {
 						if(!r.exc) {