clear init complete state on logout

lib/controllers/client.dart

@@ -122,13 +122,15 @@ class ClientController extends AsyncNotifier<int> {
     }
   }
 
-  Future<(Event, RoomMetadata)> handlePush(Map<String, dynamic> data) async {
+  Future<(Event, RoomMetadata)?> handlePush(Map<String, dynamic> data) async {
     final response = await callGomuksMethod(
       data,
       (handle, data) async => GomuksHandlePush(handle, data),
     );
 
-    return (
+    return response == null
+        ? null
+        : (
             Event.fromJson(response["event"]),
             RoomMetadata.fromJson(response["room"]),
           );

lib/controllers/settings_sections.dart

@@ -9,6 +9,7 @@ import "package:m3e_buttons/m3e_buttons.dart";
 import "package:nexus/controllers/account_data.dart";
 import "package:nexus/controllers/client.dart";
 import "package:nexus/controllers/client_state.dart";
+import "package:nexus/controllers/init_complete.dart";
 import "package:nexus/controllers/notification.dart";
 import "package:nexus/controllers/settings.dart";
 import "package:nexus/controllers/unified_push.dart";
@@ -277,6 +278,7 @@ class SettingsSectionsController
                             .read(UnifiedPushController.provider.notifier)
                             .deregister()
                             .onError(showError);
+                        container.invalidate(InitCompleteController.provider);
                         await container
                             .read(ClientController.provider.notifier)
                             .logout()