update loaing

lib/features/auth/presentation/pages/otp_verification_page.dart

@@ -11,6 +11,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:go_router/go_router.dart';
+import 'package:worker/core/widgets/loading_indicator.dart';
 
 import 'package:worker/core/constants/ui_constants.dart';
 import 'package:worker/core/router/app_router.dart';
@@ -377,15 +378,9 @@ class _OtpVerificationPageState extends ConsumerState<OtpVerificationPage> {
                           ),
                         ),
                         child: _isLoading
-                            ? SizedBox(
-                                height: 20,
-                                width: 20,
-                                child: CircularProgressIndicator(
-                                  strokeWidth: 2,
-                                  valueColor: AlwaysStoppedAnimation<Color>(
-                                    colorScheme.onPrimary,
-                                  ),
-                                ),
+                            ? CustomLoadingIndicator(
+                                color: colorScheme.onPrimary,
+                                size: 20,
                               )
                             : const Text(
                                 'Xác nhận',