fix userfront verify-only approval routing

userfront/lib/features/auth/presentation/login_screen.dart

@@ -761,6 +761,10 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
 
   VoidCallback? _onVerificationAction;
 
+  void _runVerificationExitAction() {
+    _onVerificationAction?.call();
+  }
+
   Widget _buildVerificationResultView() {
     return Center(
       child: Padding(
@@ -794,7 +798,11 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
             FilledButton(
               onPressed: () {
                 if (_onVerificationAction != null) {
-                  _onVerificationAction!();
+                  _runVerificationExitAction();
+                  return;
+                }
+                if (_verificationOnly) {
+                  webWindow.close();
                   return;
                 }
                 final hasLocalSession =
@@ -1604,11 +1612,14 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
     if (_verificationOnly && _verificationApproved) {
       return Scaffold(
         appBar: AppBar(
+          automaticallyImplyLeading: false,
           title: Text(_verificationPageTitle),
-          leading: IconButton(
-            icon: const Icon(Icons.arrow_back),
-            onPressed: () => context.go(buildLocalizedHomePath(Uri.base)),
-          ),
+          leading: _onVerificationAction == null
+              ? null
+              : IconButton(
+                  icon: const Icon(Icons.close),
+                  onPressed: _runVerificationExitAction,
+                ),
           actions: const [ThemeToggleButton(compact: true)],
         ),
         body: _buildVerificationResultView(),