[FIX] website_sale_mondialrelay: override shipping partner fields check

Steps to reproduce:
1) Set up mondial relay and publish it
2) Go to /shop, add a product and checkout
3) Choose a pickup location of mondial relay
4) Reload the page
5) Observe an error 'You cannot edit the address of a Point Relais'

Reason: a partner was created without
mandatory field 'phone` for the shipping address

Solution: do not check mandatory fields for mondial relay partners
as it is not allowed to edit them

closes odoo/odoo#162047

Signed-off-by: Valeriya Chuprina (vchu) <vchu@odoo.com>

addons/website_sale_mondialrelay/controllers/controllers.py

@@ -52,6 +52,12 @@ class WebsiteSaleMondialrelay(WebsiteSale):
             raise UserError(_('You cannot edit the address of a Point Relais®.'))
         return res
 
+    def _check_shipping_partner_mandatory_fields(self, partner_id):
+        # skip check for mondialrelay partners as the user can not edit them
+        if partner_id.is_mondialrelay:
+            return True
+        return super()._check_shipping_partner_mandatory_fields(partner_id)
+
 
 class WebsiteSaleDeliveryMondialrelay(WebsiteSaleDelivery):