R1:d63281cc549e

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…