[IMP] account: display code and name on Incoterms

Display incoterm names the same way we display products with their
`internal_reference`.

Part of task-3218314

Part-of: odoo/odoo#119381

addons/account/models/account_incoterms.py

@@ -17,3 +17,7 @@ class AccountIncoterms(models.Model):
     active = fields.Boolean(
         'Active', default=True,
         help="By unchecking the active field, you may hide an INCOTERM you will not use.")
+
+    def name_get(self):
+        return [(incoterm.id, '%s%s' % (incoterm.code and '[%s] ' % incoterm.code or '', incoterm.name))
+                for incoterm in self]