[IMP] sale_stock: expense policy should not impact delivered qty on SOL

When making a SO with a stockable product with an expense policy set,
confirming
the SO will increase the delivered quantity according to the validated
picking. But
when unlocking and modifying the ordered quantity on picking the
delivered quantity
on SO does not change (it is if the product have no expense policy).
So the expense policy influence the flow in a way (update validated
picking) but not
on the the other (confirm SO) to compute SO line delivered quantity.

This commits make the expense policy not relevent when modifying ordered
quantity
on picking.
It also prepare the cleaning to unify API of delivered quantity
computation on SO
line for stock and service.

addons/sale_stock/models/stock.py

@@ -38,7 +38,7 @@ class StockMove(models.Model):
         if 'product_uom_qty' in vals:
             for move in self:
                 if move.state == 'done':
-                    sale_order_lines = self.filtered(lambda move: move.sale_line_id and move.product_id.expense_policy == 'no').mapped('sale_line_id')
+                    sale_order_lines = self.filtered(lambda move: move.sale_line_id).mapped('sale_line_id')
                     for line in sale_order_lines:
                         line.qty_delivered = line._get_delivered_qty()
         return res