clean up messy code

src/app/chats/components/messages/item.tsx

@@ -22,7 +22,7 @@ export function ChatMessageItem({
   return (
     <div className="flex h-min min-h-min w-full select-text flex-col px-5 py-3 backdrop-blur-xl hover:bg-white/10">
       <div className="flex flex-col">
-        <User pubkey={message.pubkey} time={message.created_at} isChat={true} />
+        <User pubkey={message.pubkey} time={message.created_at} variant="chat" />
         <div className="-mt-[20px] pl-[49px]">
           <p className="select-text whitespace-pre-line break-words text-base text-white">
             {message.content}