[FIX] delivery: Delivery method name not translated

When adding a SO line with a delivery method (e.g. The Post) for a customer
with a different language that the one set on the current language, the description
of the SO line was not translated. Inspired from function 'product_id_change' in
model 'sale.order.line'

opw:1843934

addons/delivery/models/sale_order.py

@@ -89,9 +89,10 @@ class SaleOrder(models.Model):
             taxes_ids = self.fiscal_position_id.map_tax(taxes, carrier.product_id, self.partner_id).ids
 
         # Create the sales order line
+        carrier_name = carrier.product_id.with_context(lang=self.partner_id.lang).name_get()[0][1]
         values = {
             'order_id': self.id,
-            'name': carrier.name,
+            'name': carrier_name,
             'product_uom_qty': 1,
             'product_uom': carrier.product_id.uom_id.id,
             'product_id': carrier.product_id.id,