[FIX] sale_coupon & sale_coupon_delivery: Filter the taxes by company.

In this case for scenario with multi-company, the new line of the reward product, should be set with the taxes for company of the current sale order.
Before this change the taxes that are selected were for the all companies setted in the product.

closes odoo/odoo#63651

Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/sale_coupon/models/sale_order.py

@@ -99,7 +99,7 @@ class SaleOrder(models.Model):
 
         reward_qty = min(int(int(max_product_qty / program.rule_min_quantity) * program.reward_product_quantity), reward_product_qty)
         # Take the default taxes on the reward product, mapped with the fiscal position
-        taxes = program.reward_product_id.taxes_id
+        taxes = program.reward_product_id.taxes_id.filtered(lambda t: t.company_id.id == self.company_id.id)
         if self.fiscal_position_id:
             taxes = self.fiscal_position_id.map_tax(taxes)
         return {

addons/sale_coupon_delivery/models/sale_order.py

@@ -26,7 +26,7 @@ class SaleOrder(models.Model):
 
     def _get_reward_values_free_shipping(self, program):
         delivery_line = self.order_line.filtered(lambda x: x.is_delivery)
-        taxes = delivery_line.product_id.taxes_id
+        taxes = delivery_line.product_id.taxes_id.filtered(lambda t: t.company_id.id == self.company_id.id)
         if self.fiscal_position_id:
             taxes = self.fiscal_position_id.map_tax(taxes)
         return {