fix: Reset advance paid amount on Oreder cancel and amend

(cherry picked from commit 92f37ca111)

# Conflicts:
#	erpnext/buying/doctype/purchase_order/purchase_order.js

erpnext/selling/doctype/sales_order/sales_order.js

@@ -95,6 +95,11 @@ frappe.ui.form.on("Sales Order", {
 			return query;
 		});
 
+		// On cancel and amending a sales order with advance payment, reset advance paid amount
+		if (frm.is_new()) {
+			frm.set_value("advance_paid", 0)
+		}
+
 		frm.ignore_doctypes_on_cancel_all = ['Purchase Order'];
 	},