Fix Disguising chat message in chat

Current chat message returns `Format error: Disguised (%s, %s, %s)`, instead of the correct `Disguised block as: block`. Reverts one line of this commit: 631acbbbec64cebaf8a0a982c076512eb9abae71.

This needs testing, and I am unsure of how to test without this being committed and a snapshot being generated.