fix: do not add qty to supplied items (backport #41061) (#41066)

fix: do not add qty to supplied items

(cherry picked from commit 8233c392fb)

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

erpnext/controllers/subcontracting_controller.py

@@ -539,6 +539,9 @@ class SubcontractingController(StockController):
 		return serial_nos
 
 	def __add_supplied_item(self, item_row, bom_item, qty):
+		if bom_item.get("qty"):
+			bom_item.pop("qty")
+
 		bom_item.conversion_factor = item_row.conversion_factor
 		rm_obj = self.append(self.raw_material_table, bom_item)
 		if rm_obj.get("qty"):