fix(web): keep the diff panel head ref visible when the panel is narrow (#19089)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
db88e6b5bfScott Norteman committed on 10/18/2026, 7:01:10 PM· committed by GitHubparent7138e6e
1 file changedLine totals unavailable