refactor: update code to use centralized Ant Design imports

- Replaced direct import of '@ant-design/icons' with centralized import from '@/shared/antd-imports'

worklenz-frontend/src/pages/admin-center/admin-center-constants.ts

@@ -4,7 +4,7 @@ import {
   ProfileOutlined,
   TeamOutlined,
   UserOutlined,
-} from '@ant-design/icons';
+} from '@/shared/antd-imports';
 import React, { ReactNode, lazy } from 'react';
 const Overview = lazy(() => import('./overview/overview'));
 const Users = lazy(() => import('./users/users'));