Fix review requests becoming private after discard, reopen, close.
When marking a review request as discarded and then reopening, we force

the user to complete a draft and publish it, since the typical reason

you discard is that you've thrown away the review request, and reopening

means you're starting over on some aspect of it.
Sometimes, the discard is accidental, and a user will fix this by just

closing it again as submitted. Unfortunately, the act of reopening marks

it as not public, and that state remains when marking as submitted.
We now mark a review request as public if it's closed as submitted.

All unit tests pass.
Closed a review request as discarded, reopened, and then closed as submitted.

Verified that public was true and it could be accessed.