Monospaced preferences now display in Remarkup areas
Summary: Fixes T6109, Ref T6654. Correctly clobbers the Remarkup defaults.
Test Plan:
Tested with Copperplate!
{F239347}
Reviewers: btrahan, epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T6109, T6654
Differential Revision: https://secure.phabricator.com/D10905