fix: production plan pending-qty

(cherry picked from commit 5be7d42dfd)

erpnext/manufacturing/doctype/production_plan/production_plan.py

@@ -198,7 +198,9 @@ class ProductionPlan(Document):
 				so_item.parent,
 				so_item.item_code,
 				so_item.warehouse,
-				((so_item.qty - so_item.work_order_qty) * so_item.conversion_factor).as_("pending_qty"),
+				(
+					(so_item.qty - so_item.work_order_qty - so_item.delivered_qty) * so_item.conversion_factor
+				).as_("pending_qty"),
 				so_item.description,
 				so_item.name,
 			)