R1:3be36783b377

Consider inline comments with draft checkmarks as "unsubmitted"

Summary:
Ref T12733. When a revision has unsubmitted checkmarks:

- Color the banner yellow.
- Show them in the "X unsubmitted" count.
- Make the "X unsubmitted" button cycle between all drafts (written but unpublished comments) and "draft done" (checked but unsubmitted "Done" checkbox comments).

Test Plan:
- Checked a "Done" box, saw "1 unsubmitted" and yellow banner.
- Clicked "5 unsubmitted" repeatedly, saw it cycle through all…