Ref T13546. Fixes some issues where marker selection in Mercurial didn't work, and selects "draft()" as the set of commits to show, which is at least somewhat reasonable.
- Maniphest Tasks
- T13546: Modernize the "arc land" workflow
- rARC4b8a32ee0273: Give Mercurial more plausible marker behavior
Ran "arc branches" and "arc bookmarks" in Mercurial, got more reasonable output.