requestDelayedMessage

Adds a ToolMessageDelayed to the messages in the tool.
This message is triggered when the tool call is delayed.
There are the two things that can trigger this message:

  1. The user talks with the assistant while your server is processing the request. Default is "Sorry, a few more seconds."
  2. The server doesn't respond within timingMilliseconds.
  3. This message is never triggered for async tool calls.