This commit fixes the 'You need to supply a Lot/Serial Number...' message when validating a receipt with backorder for subcontracted tracked products. closes odoo/odoo#79121 Task: 2604664 X-original-commit: 2ab8f5cc681d45323e540ca57f85168fd587cf02 Signed-off-by: Tiffany Chang <tic@odoo.com>