R1:386d2b62f819

Fix some copy/paste slop with BLOCK actions in Herald transcripts

Summary: Fixes T9060. These actions still work fine, but the transcripts got messed up a bit.

Test Plan: Viewed transcripts with blocking actions.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9060

Differential Revision: https://secure.phabricator.com/D13782