Fix lag (#13)

Co-authored-by: cheng-tan <chengtan2013@gmail.com>

Author: husseinmozannar

frontend/src/components/views/chat/chat.tsx

@@ -947,6 +947,10 @@ export default function ChatView({
     }
   };
 
+  if (!visible) {
+    return null;
+  }
+
   return (
     <div className="text-primary h-[calc(100vh-100px)] bg-primary relative rounded flex-1 scroll w-full">
       {contextHolder}