fix: Set Pending Qty in Prod Plan after updating Work Order

(cherry picked from commit 7116d7ae0e)

erpnext/manufacturing/doctype/production_plan/production_plan.py

@@ -280,6 +280,7 @@ class ProductionPlan(Document):
 		for data in self.po_items:
 			if data.name == production_plan_item:
 				data.produced_qty = produced_qty
+				data.pending_qty = flt(data.planned_qty - produced_qty)
 				data.db_update()
 
 		self.calculate_total_produced_qty()