event callback for onCancel and behavior configuration

[TechyChan]

Right now, when the user presses cancel during agent streaming, the current streamed message and last user message is deleted. This behavior isn't ideal, as most LLM chat playgrounds will just simply cancel the current stream and leave everything in place, with the option to regenerate the response.

It would be great to configure or change this default cancellation behavior and also add an event callback when streaming is canceled.

[sagar1596]

Is there any update on this issue ?