fix(web): copied task lists keep their nested items and code blocks (#14778)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
adfdcb67b3Soroush Baraouf committed on 10/18/2026, 7:31:00 PM· committed by GitHubparentddafde5
2 files changedLine totals unavailable