fix: Optimize the export method of internal components

Author: shuashuai

ui/src/pages/Users/Notifications/components/index.ts

@@ -0,0 +1,4 @@
+import Inbox from './Inbox';
+import Achievements from './Achievements';
+
+export { Inbox, Achievements };

ui/src/pages/Users/Notifications/index.tsx

@@ -33,8 +33,7 @@ import {
 } from '@/services';
 import { floppyNavigation } from '@/utils';
 
-import Inbox from './components/Inbox';
-import Achievements from './components/Achievements';
+import { Inbox, Achievements } from './components';
 import './index.scss';
 
 const PAGE_SIZE = 10;