Fix duplicate hints in multi buffer excerpts during editing and scrolling (#41143)

Follow-up of https://github.com/zed-industries/zed/pull/40183
Closes https://github.com/zed-industries/zed/issues/24798

Release Notes:

- N/A
1dffdea27cKirill Bulatov committed on 10/24/2025, 11:08:19 PM· committed by GitHubparent1f40a3c
1 file changedLine totals unavailable