Update sale addresses also for guest party from Shopify order

If the guest party is set back because the customer has been removed on
Shopify, the addresses must be also set back to those from the guest party.

Closes #14235

modules/web_shop_shopify/sale.py

@@ -84,17 +84,20 @@ class Sale(IdentifierMixin, metaclass=PoolMeta):
                     order.shipping_address)
             else:
                 shipment_address = None
-            if shipment_address:
-                setattr_changed(sale, 'shipment_address', shipment_address)
             if getattr(order, 'billing_address', None):
                 invoice_address = party.get_address_from_shopify(
                     order.billing_address)
             else:
                 invoice_address = None
-            if invoice_address or shipment_address:
-                setattr_changed(
-                    sale, 'invoice_address',
-                    invoice_address or shipment_address)
+        else:
+            shipment_address = sale.party.address_get(type='delivery')
+            invoice_address = sale.party.address_get(type='invoice')
+
+        if shipment_address:
+            setattr_changed(sale, 'shipment_address', shipment_address)
+        if invoice_address or shipment_address:
+            setattr_changed(
+                sale, 'invoice_address', invoice_address or shipment_address)
 
         if not party.addresses:
             address = Address(party=party)