refactor: unified cn utils (#29916)

Co-authored-by: yyh <yuanyouhuilyz@gmail.com>
Co-authored-by: yyh <92089059+lyzno1@users.noreply.github.com>

web/app/components/explore/sidebar/index.tsx

@@ -7,7 +7,7 @@ import { useSelectedLayoutSegments } from 'next/navigation'
 import Link from 'next/link'
 import Toast from '../../base/toast'
 import Item from './app-nav-item'
-import cn from '@/utils/classnames'
+import { cn } from '@/utils/classnames'
 import ExploreContext from '@/context/explore-context'
 import Confirm from '@/app/components/base/confirm'
 import Divider from '@/app/components/base/divider'