fix warning

mobile/lib/widgets/settings/beta_timeline_list_tile.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:math' as math;
 
 import 'package:auto_route/auto_route.dart';
@@ -89,7 +90,7 @@ class _BetaTimelineListTileState extends ConsumerState<BetaTimelineListTile> wit
                   ElevatedButton(
                     onPressed: () async {
                       Navigator.of(context).pop();
-                      context.router.replaceAll([ChangeExperienceRoute(switchingToBeta: value)]);
+                      unawaited(context.router.replaceAll([ChangeExperienceRoute(switchingToBeta: value)]));
                     },
                     child: Text("ok".t(context: context)),
                   ),

mobile/lib/widgets/settings/networking_settings/local_network_preference.dart

@@ -102,13 +102,13 @@ class LocalNetworkPreference extends HookConsumerWidget {
           ),
         );
       } else {
-        saveWifiName(wifiName);
+        await saveWifiName(wifiName);
       }
 
       final serverEndpoint = ref.read(authProvider.notifier).getServerEndpoint();
 
       if (serverEndpoint != null) {
-        saveLocalEndpoint(serverEndpoint);
+        await saveLocalEndpoint(serverEndpoint);
       }
     }