R1:2e9cc5e8e8a3

Make implicit audits by the Owners tool use modern code

Summary:
Ref T10978. This updates audits triggered by Owners to use a modern transaction. Minor changes:

- After D17264, we no longer need the "AUDIT_NOT_REQUIRED" fake-audits to record package membership. This no longer creates them.
- This previously saved English-language, untranslatable text strings about audit details onto the audit relationship. I've removed them, per discussion in D17263.

The "Audit Reasons" here are potentially a little…