Fix button colors by importing component CSS in site layout

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

apps/site/app/layout.tsx

@@ -1,5 +1,6 @@
 import { RootProvider } from 'fumadocs-ui/provider/next';
 import './global.css';
+import '@object-ui/components/style.css';
 import '@object-ui/plugin-aggrid/style.css';
 import { Inter } from 'next/font/google';