update icon

lib/features/notifications/presentation/pages/notifications_page.dart

@@ -194,8 +194,8 @@ class NotificationsPage extends HookConsumerWidget {
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Icon(
-            Icons.notifications_none,
+          FaIcon(
+            FontAwesomeIcons.bell,
             size: 64,
             color: AppColors.grey500.withValues(alpha: 0.5),
           ),
@@ -227,8 +227,8 @@ class NotificationsPage extends HookConsumerWidget {
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Icon(
-            Icons.error_outline,
+          FaIcon(
+            FontAwesomeIcons.circleExclamation,
             size: 64,
             color: AppColors.danger.withValues(alpha: 0.5),
           ),
@@ -248,7 +248,7 @@ class NotificationsPage extends HookConsumerWidget {
                 filteredNotificationsProvider(selectedCategory.value),
               );
             },
-            icon: const Icon(Icons.refresh),
+            icon: const FaIcon(FontAwesomeIcons.arrowsRotate, size: 18),
             label: const Text('Thử lại'),
             style: ElevatedButton.styleFrom(
               backgroundColor: AppColors.primaryBlue,