Migrate remaining Audit database status constants

Summary: Depends on D19652. Ref T13197. See PHI851. This migrates the actual auditStatus on Commits, and older status transactions.

Test Plan:

• Ran migrations.
• Spot-checked the database for sanity.
• Ran some different queries, got unchanged results from before migration.
• Reviewed historic audit state transactions, and accepted/raised concern on new audits. All state transactions appeared to generate properly.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13197

Differential Revision: https://secure.phabricator.com/D19655