fix: Setup push on chat list init

lib/pages/chat_list/chat_list.dart

@@ -360,6 +360,7 @@ class ChatListController extends State<ChatList>
     });
 
     _checkTorBrowser();
+    Matrix.of(context).backgroundPush?.setupPush();
 
     super.initState();
   }

lib/utils/background_push.dart

@@ -72,8 +72,6 @@ class BackgroundPush {
   bool upAction = false;
 
   BackgroundPush._(this.client) {
-    onLogin ??=
-        client.onLoginStateChanged.stream.listen(handleLoginStateChanged);
     onRoomSync ??= client.onSync.stream
         .where((s) => s.hasRoomUpdate)
         .listen((s) => _onClearingPush(getFromServer: false));
@@ -123,7 +121,6 @@ class BackgroundPush {
 
   void handleLoginStateChanged(_) => setupPush();
 
-  StreamSubscription<LoginState>? onLogin;
   StreamSubscription<SyncUpdate>? onRoomSync;
 
   void _newFcmToken(String token) {

lib/widgets/matrix.dart

@@ -78,7 +78,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
   String? loginUsername;
   bool? loginRegistrationSupported;
 
-  BackgroundPush? _backgroundPush;
+  BackgroundPush? backgroundPush;
 
   Client get client {
     if (widget.clients.isEmpty) {
@@ -397,7 +397,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
     }
 
     if (PlatformInfos.isMobile) {
-      _backgroundPush = BackgroundPush(
+      backgroundPush = BackgroundPush(
         client,
         context,
         widget.router,
@@ -444,7 +444,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
     client.requestHistoryOnLimitedTimeline = !foreground;
     if (_firstStartup) {
       _firstStartup = false;
-      _backgroundPush?.setupPush();
+      backgroundPush?.setupPush();
     }
   }
 
@@ -514,7 +514,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
     client.httpClient.close();
     onFocusSub?.cancel();
     onBlurSub?.cancel();
-    _backgroundPush?.onLogin?.cancel();
+    backgroundPush?.onRoomSync?.cancel();
 
     linuxNotifications?.close();