multi_buffer: Remap excerpt ids to latest excerpt in excerpt fetching (#44229)

Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Co-authored by: Cole Miller <cole@zed.dev>
37b0cdf94bLukas Wirth committed on 12/5/2025, 6:20:29 PM· committed by GitHubparentd76dd86
3 files changedLine totals unavailable