temp: disable CopilotKit to fix CSS build error

Author: wenluowang

pages/_app.mdx

@@ -1,12 +1,7 @@
 import "../styles/custom.css";
-import CopilotKitWrapper from "../components/CopilotKitWrapper";
 
 export default function MyApp({ Component, pageProps }) {
-  return (
-    <CopilotKitWrapper>
-      <Component {...pageProps} />
-    </CopilotKitWrapper>
-  );
+  return <Component {...pageProps} />;
 }