Coding Agent session: Shows thought process but not final comment

[chrmarti]

Testing #264383

The PR has a comment that is like the result from the agent run and that is missing from the agent session editor:

On GitHub (which doesn't show the thought process):

[joshspicer]

Good point. We are not incorporating other people's pr comments from the timeline but we probably should

[joshspicer]

Did not get to this. We need to compute each coding agent session's logs, right now we do not do that