feat(auth): 登录异常改为居中弹窗

lib/l10n/app_localizations_en.dart

@@ -958,6 +958,15 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get authNetworkError => 'Network error, please try again';
 
+  @override
+  String get authLoginFailed => 'Login failed';
+
+  @override
+  String get authRegisterFailed => 'Registration failed';
+
+  @override
+  String get authErrorConfirm => 'OK';
+
   @override
   String get authSwitchToSignUp => 'New here? Create an account';