회원가입 완료 알림창 문제 수정

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

@@ -353,7 +353,10 @@ class _SignupScreenState extends State<SignupScreen> {
         content: Text(tr('msg.userfront.signup.success.body')),
         actions: [
           TextButton(
-            onPressed: () => context.go(buildLocalizedSigninPath(Uri.base)),
+            onPressed: () {
+              Navigator.of(context).pop();
+              context.go(buildLocalizedSigninPath(Uri.base));
+            },
             child: Text(tr('ui.userfront.signup.success.action')),
           ),
         ],