assistant2: Add tiny visual adjustments (#23748)

This PR adds really tiny visual adjustments to the assistant 2. I guess
the most note-worthy thing here is that I separated the `title` for
History views into two just because I wanted to render the `/` smaller
and lighter. 😬

Release Notes:

- N/A
7a6223e71bDanilo Leal committed on 1/27/2025, 11:26:34 PM· committed by GitHubparent06424c9
3 files changedLine totals unavailable