Add inline styles for {key ...} in HTML mail
Summary: Fixes T11607.
Test Plan:
- Made a comment using {key ...}.
- Used bin/mail show-outbound --id X --dump-html > test.html to review HTML:
{F1805304}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11607
Differential Revision: https://secure.phabricator.com/D16523