revert return line of _get_loadbalancer_status function (#385)

src/charm.py

@@ -1188,9 +1188,7 @@ def _get_loadbalancer_status(namespace: str, service_name: str) -> Optional[str]
     if not (ingress_address := ingress_addresses[0]):
         return None
 
-    # `return ingress_address.hostname` removed since the hostname (external hostname)
-    # is configured through juju config so it is not necessary to retrieve that from K8s.
-    return ingress_address.ip
+    return ingress_address.hostname or ingress_address.ip
 
 
 def _get_relation_type(relation: Relation) -> _IngressRelationType: