Select and scroll to the best search match in settings (#53916)

When adding code lens to the long list of search items, I've failed to
find it when searching, as we always select first item in the matches
list, which is not necessarily the best one.

Left is before, right is after:


https://github.com/user-attachments/assets/9033dfd8-abde-4a45-a214-ae859105d6ad


Release Notes:

- Improved settings search ergonomics
b928e595c2Kirill Bulatov committed on 4/15/2026, 8:59:49 AM· committed by GitHubparent44305e6
1 file changedLine totals unavailable