R1:71615f4b9917

Log Herald rules having disabled Herald rules as condition via phlog()

Summary:
Do not silently fail when a Herald rule refers in its conditions to a disabled rule.
Allow Phorge administrators to get aware by creating an entry in the error log via phlog() instead of crossing fingers that someone may from time to time get the idea to open and read Herald transcripts.

This is similar to T15885 / D25735.

Refs T15869

Test Plan:
1. Phorge at `0873b36569bfcf502a092870d7d5f4d088ed9003`
2. Set up a Herald rule…