fix: per_billed for return DN (#30868)

* fix: per_billed for return DN

* chore: move patch from v14 to v13

erpnext/patches/v13_0/set_per_billed_in_return_delivery_note.py

@@ -0,0 +1,29 @@
+# Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+import frappe
+
+
+def execute():
+	dn = frappe.qb.DocType("Delivery Note")
+	dn_item = frappe.qb.DocType("Delivery Note Item")
+
+	dn_list = (
+		frappe.qb.from_(dn)
+		.inner_join(dn_item)
+		.on(dn.name == dn_item.parent)
+		.select(dn.name)
+		.where(dn.docstatus == 1)
+		.where(dn.is_return == 1)
+		.where(dn.per_billed < 100)
+		.where(dn_item.returned_qty > 0)
+		.run(as_dict=True)
+	)
+
+	frappe.qb.update(dn_item).inner_join(dn).on(dn.name == dn_item.parent).set(
+		dn_item.returned_qty, 0
+	).where(dn.is_return == 1).where(dn_item.returned_qty > 0).run()
+
+	for d in dn_list:
+		dn_doc = frappe.get_doc("Delivery Note", d.get("name"))
+		dn_doc.run_method("update_billing_status")