Wrap admin pages with AdminGuard component

The AdminGuard component has been added to the AccountPage, AccountsPage, and AdminPage in the web app. This server-side implementation ensures that these pages are only accessible to super-admin users. If a user is not a super-admin, the guard will trigger a redirect to a 404 page.

apps/web/app/admin/accounts/page.tsx

@@ -1,6 +1,7 @@
+import { AdminGuard } from '@kit/admin/components/admin-guard';
 import { PageBody, PageHeader } from '@kit/ui/page';
 
-export default function AccountsPage() {
+function AccountsPage() {
   return (
     <>
       <PageHeader title={'Accounts'} />
@@ -8,3 +9,5 @@ export default function AccountsPage() {
     </>
   );
 }
+
+export default AdminGuard(AccountsPage);