Allow to update production cost price updated of stock move in a closed period

The update of a production cost can happen when the input moves are in a closed
period.

Closes #13944

modules/production/stock.py

@@ -89,6 +89,7 @@ class Move(metaclass=PoolMeta):
                         | (t.production_output == Null))),
                 'production.msg_stock_move_production_single'),
             ]
+        cls._allow_modify_closed_period.add('production_cost_price_updated')
 
     @fields.depends(
         'production_output', '_parent_production_output.company',