fix: stale type information

Author: kaschula

demo/vercel/react/use-client-transport-tools/src/app/api/chat/route.ts

@@ -12,7 +12,7 @@ import type { UIMessage, UIMessageChunk } from 'ai';
 import { anthropic } from '@ai-sdk/anthropic';
 import Ably from 'ably';
 import { createServerTransport } from '@ably/ai-transport/vercel';
-import type { MessageWithHeaders } from '@ably/ai-transport';
+import type { ConversationNode } from '@ably/ai-transport';
 
 // ---------------------------------------------------------------------------
 // Types
@@ -21,8 +21,8 @@ import type { MessageWithHeaders } from '@ably/ai-transport';
 interface ChatRequestBody {
   turnId: string;
   clientId: string;
-  messages: MessageWithHeaders<UIMessage>[];
-  history?: MessageWithHeaders<UIMessage>[];
+  messages: ConversationNode<UIMessage>[];
+  history?: ConversationNode<UIMessage>[];
   id: string;
   forkOf?: string;
   parent?: string | null;