Add `search.match_background` colors to bundled themes (#7385)
This PR populates the `search.match_background` colors in the bundled
themes, using the values from the Zed1 themes.
Release Notes:
- Added theme-specific `search.match_background` colors to built-in
themes.
47329f4489Marshall Bowers committed on 2/5/2024, 4:13:38 PM· committed by GitHubparent223f45c