Collapse intermediate plot/gt `call_measure` results

[skaltman]

This might be too specific to TLG-agent, but it can be a little distracting when every call_measure result opens as the agent makes several calls in sequence, especially when it ultimately writes custom code.

Maybe all but the last result be collapsed? Ideally, display control could be exposed to the agent so it can control which result, if any, should be opened for the user.

[simonpcouch]

I really like this idea. After poking at this for a bit, it seems like this would require changes in shinychat rather than commons alone, so this one will have to wait!