Closes https://github.com/zed-industries/zed/issues/42356
This PR fixes the history view losing focus by simply always displaying
the search editor. I don't think it's too weird to not have it when it's
empty, and it also ends up matching how regular pickers work.
Release Notes:
- agent: Fixed a bug where navigating the agent panel with the keyboard
wouldn't work if you visited the history view and it was empty/had no
entries.
Danilo Leal
ed61a79cc5