fix(mobile): folding the Duo keeps the thread's end or the reader's line in place (#23147)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
5ed2ea245eJulius Marminge committed on 10/22/2026, 12:58:53 AM· committed by GitHubparent37d6fce
5 files changedLine totals unavailable