file_finder: Adjust list item design (#59164)

Follow up to https://github.com/zed-industries/zed/pull/59072 adjusting
some UI design for the file finder that got regressed.

Release Notes:

- N/A
cb7721602bDanilo Leal committed on 6/15/2026, 3:31:50 AM· committed by GitHubparentf9d57b5
2 files changedLine totals unavailable