fix(ui): center folder tab labels in chat list

lib/frontend/screens/chats/chat_list_screen.dart

@@ -1581,6 +1581,7 @@ class _ChatListScreenState extends State<ChatListScreen>
         }
       },
       child: Container(
+        alignment: Alignment.center,
         padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
         decoration: BoxDecoration(
           color: isSelected ? cs.primaryContainer : cs.surfaceContainerHigh,
@@ -1588,6 +1589,7 @@ class _ChatListScreenState extends State<ChatListScreen>
         ),
         child: Text(
           title,
+          textAlign: TextAlign.center,
           style: TextStyle(
             color: isSelected ? cs.onPrimaryContainer : cs.primary,
             fontSize: 14,

lib/frontend/widgets/custom_notification.dart

@@ -2,7 +2,10 @@ import 'package:flutter/material.dart';
 import 'package:google_fonts/google_fonts.dart';
 
 void showCustomNotification(BuildContext context, String message) {
-  final overlay = Overlay.of(context);
+  showCustomNotificationOnOverlay(Overlay.of(context), message);
+}
+
+void showCustomNotificationOnOverlay(OverlayState overlay, String message) {
   final entry = OverlayEntry(
     builder: (context) => CustomNotification(message: message),
   );

lib/main.dart

@@ -73,9 +73,9 @@ class KometAppState extends State<KometApp> {
 
       final navState = KometApp.navigatorKey.currentState;
       if (navState != null) {
-        final overlayContext = navState.overlay?.context;
-        if (overlayContext != null && overlayContext.mounted) {
-          showCustomNotification(overlayContext, e.message);
+        final overlay = navState.overlay;
+        if (overlay != null) {
+          showCustomNotificationOnOverlay(overlay, e.message);
         }
 
         await navState.pushAndRemoveUntil(