assistant2: Truncate thread title in context picker (#26775)

Similar issue as in https://github.com/zed-industries/zed/pull/26721.

Release Notes:

- N/A
ad14dcc57bDanilo Leal committed on 3/14/2025, 2:03:57 PM· committed by GitHubparentb9432db
1 file changedLine totals unavailable