fixed back button navigation

app/lib/core/routing/routes.dart

@@ -8,12 +8,15 @@ import 'package:go_router/go_router.dart';
 part 'routes.g.dart';
 
 @TypedGoRoute<KagiRoute>(
+  name: 'KagiRoute',
   path: '/',
   routes: [
     TypedGoRoute<AboutRoute>(
+      name: 'AboutRoute',
       path: 'about',
     ),
     TypedGoRoute<SettingsRoute>(
+      name: 'SettingsRoute',
       path: 'settings',
     ),
   ],

app/lib/core/routing/routes.g.dart

@@ -12,14 +12,17 @@ List<RouteBase> get $appRoutes => [
 
 RouteBase get $kagiRoute => GoRouteData.$route(
       path: '/',
+      name: 'KagiRoute',
       factory: $KagiRouteExtension._fromState,
       routes: [
         GoRouteData.$route(
           path: 'about',
+          name: 'AboutRoute',
           factory: $AboutRouteExtension._fromState,
         ),
         GoRouteData.$route(
           path: 'settings',
+          name: 'SettingsRoute',
           factory: $SettingsRouteExtension._fromState,
         ),
       ],