[FIX] website_sale: required fields

- Go to eCommerce, add a product to the cart
- At address configuration, add a delivery address. Do not field the
  name or the phone

It is possible to save the address while the fields are mandatory.

opw-1827797

addons/website_sale/views/templates.xml

@@ -1221,7 +1221,7 @@
                                     <input type="hidden" name="partner_id" t-att-value="partner_id or '0'" />
                                     <input type="hidden" name="callback" t-att-value="callback" />
                                     <!-- Example -->
-                                    <input type="hidden" name="field_required" t-att-value="mode[1] == 'billing' and 'phone,name' or ''" />
+                                    <input type="hidden" name="field_required" t-att-value="'phone,name'" />
 
                                     <div class="clearfix"/>
                                     <div style='padding: 0 15px'>