🐛 fix: fix gateway runtime

Author: arvinxx

src/pages/api/gateway.ts

@@ -1,11 +1,11 @@
-import { createGatewayOnEdgeRuntime } from '@lobehub/chat-plugins-gateway';
-
 export const config = {
   runtime: 'edge',
 };
 
 export default async (req: Request) => {
   if (process.env.NODE_ENV === 'development') {
+    const { createGatewayOnEdgeRuntime } = await import('@lobehub/chat-plugins-gateway');
+
     return createGatewayOnEdgeRuntime()(req);
   }