neon: Fix theme switching

packages/neon/neon/lib/src/app.dart

@@ -265,9 +265,13 @@ class _NeonAppState extends State<NeonApp> with WidgetsBindingObserver, tray.Tra
                 }
 
                 FlutterNativeSplash.remove();
-                return ValueListenableBuilder(
+                return ResultBuilder<Capabilities?>(
-                  valueListenable: themeNotifier,
+                  stream: activeAccountSnapshot.hasData
-                  builder: (final context, final nextcloudTheme, final child) => MaterialApp.router(
+                      ? widget.accountsBloc.getCapabilitiesBloc(activeAccountSnapshot.data!).capabilities
+                      : null,
+                  builder: (final context, final capabilitiesSnapshot) {
+                    final nextcloudTheme = capabilitiesSnapshot.data?.capabilities.theming;
+                    return MaterialApp.router(
                       localizationsDelegates: AppLocalizations.localizationsDelegates,
                       supportedLocales: AppLocalizations.supportedLocales,
                       themeMode: themeMode,
@@ -283,7 +287,8 @@ class _NeonAppState extends State<NeonApp> with WidgetsBindingObserver, tray.Tra
                         oledAsDark: themeOLEDAsDark,
                       ),
                       routerDelegate: _routerDelegate,
-                  ),
+                    );
+                  },
                 );
               },
             ),

packages/neon/neon/lib/src/blocs/accounts.dart

@@ -164,9 +164,7 @@ class AccountsBloc extends Bloc implements AccountsBlocEvents, AccountsBlocState
 
   CapabilitiesBloc getCapabilitiesBloc(final Account account) {
     if (_capabilitiesBlocs[account.id] != null) {
-      final bloc = _capabilitiesBlocs[account.id]!;
+      return _capabilitiesBlocs[account.id]!;
-      unawaited(bloc.refresh());
-      return bloc;
     }
 
     return _capabilitiesBlocs[account.id] = CapabilitiesBloc(

packages/neon/neon/lib/src/blocs/capabilities.dart

@@ -14,10 +14,6 @@ class CapabilitiesBloc extends InteractiveBloc implements CapabilitiesBlocEvents
     this._requestManager,
     this._client,
   ) {
-    capabilities.listen((final value) {
-      themeNotifier.value = value.data?.capabilities.theming;
-    });
-
     unawaited(refresh());
   }
 

packages/neon/neon/lib/src/utils/theme.dart

@@ -1,7 +1,5 @@
 part of '../../neon.dart';
 
-final themeNotifier = ValueNotifier<NextcloudCoreServerCapabilities_Ocs_Data_Capabilities_Theming?>(null);
-
 const themePrimaryColor = Color(0xFFF37736);
 
 ThemeData getThemeFromNextcloudTheme(

packages/neon/neon/lib/src/widgets/result_builder.dart

@@ -7,7 +7,7 @@ class ResultBuilder<R> extends StatelessWidget {
     super.key,
   });
 
-  final BehaviorSubject<Result<R>> stream;
+  final BehaviorSubject<Result<R>>? stream;
 
   final Widget Function(BuildContext, Result<R>) builder;