fix phone dashboard

lib/features/agency_webview/screens/agency_dashboard_webview_screen.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:webview_flutter/webview_flutter.dart';
 import '../../../core/constants/app_constants.dart';
+import '../../../widgets/app_back_button.dart';
 
 class AgencyDashboardWebViewScreen extends StatefulWidget {
   const AgencyDashboardWebViewScreen({super.key});
@@ -53,7 +54,7 @@ class _AgencyDashboardWebViewScreenState
     return Scaffold(
       appBar: AppBar(
         title: const Text('Agency Dashboard'),
-        leading: BackButton(onPressed: () => context.go('/landing')),
+        leading: const AppBackButton(fallbackRoute: '/landing'),
         actions: [
           if (!_isLoading)
             IconButton(