fix isolated tab handling

apps/weblibre/lib/features/user/domain/presentation/dialogs/quit_browser_dialog.dart

@@ -30,7 +30,7 @@ Future<bool?> showQuitBrowserDialog(BuildContext context) {
         icon: const Icon(Icons.warning),
         title: const Text('Quit Browser'),
         content: const Text(
-          'This will properly shutdown the browser and clear private tabs',
+          'This will properly shutdown the browser and clear private tab data',
         ),
         actions: <Widget>[
           TextButton(

apps/weblibre/lib/features/user/domain/presentation/dialogs/switch_profile_dialog.dart

@@ -33,7 +33,7 @@ Future<bool?> showSwitchProfileDialog(
       icon: const Icon(Icons.warning),
       title: const Text('Switch User'),
       content: Text(
-        "Switching to User '$profileName' will require a restart of the Browser.",
+        "Switching to User '$profileName' will require a restart of the Browser.\n\nPrivate tab data will be cleared on restart.",
         style: const TextStyle(fontWeight: FontWeight.bold),
       ),
       actions: [