Important

This PR enables passing threadId to the backend in various runtime configurations to manage conversation threads.

• Behavior:
  • Allow passing threadId to backend in useAssistantTransportRuntime, useDataStreamRuntime, and useLocalRuntime.
  • threadId is used to identify conversation threads.
• Documentation:
  • Update assistant-transport.mdx, local.mdx, and data-stream.mdx to include threadId in API payloads.
• Code Changes:
  • Add threadId handling in useAssistantTransportRuntime.tsx, useDataStreamRuntime.ts, and useLocalRuntime.tsx.
  • Modify ChatModelAdapter.tsx and LocalThreadRuntimeCore.tsx to support threadId.
  • Update LocalThreadListRuntimeCore.tsx to set threadId for main thread.

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