fix: close PO on SCO close (backport #38667) (#38681)

fix: close PO on SCO close

(cherry picked from commit b023e5d)

Co-authored-by: s-aga-r <sagarsharma.s312@gmail.com>

erpnext/subcontracting/doctype/subcontracting_order/subcontracting_order.py

@@ -7,6 +7,7 @@
 from frappe.utils import flt
 
 from erpnext.buying.doctype.purchase_order.purchase_order import is_subcontracting_order_created
+from erpnext.buying.doctype.purchase_order.purchase_order import update_status as update_po_status
 from erpnext.controllers.subcontracting_controller import SubcontractingController
 from erpnext.stock.stock_balance import update_bin_qty
 from erpnext.stock.utils import get_bin
@@ -308,6 +309,9 @@ def update_status(self, status=None, update_modified=True):
 				"Subcontracting Order", self.name, "status", status, update_modified=update_modified
 			)
 
+			if status == "Closed":
+				update_po_status("Closed", self.purchase_order)
+
 
 @frappe.whitelist()
 def make_subcontracting_receipt(source_name, target_doc=None):