Correct rendering of "Another Herald Rule" conditions in Herald

Summary: Fixes T8920. These are semi-magical and need to be slightly special cased, now.

Test Plan: {F654502}

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T8920

Differential Revision: https://secure.phabricator.com/D13696