Merge branch '1820151'

* 1820151:
  Bug 1820151 - Mozilla Phabricator emails allow any user to secretly access secure revision title, comments and private files

Author: dklawren

moz-extensions/src/email/resolve/ResolveComments.php

@@ -180,9 +180,9 @@ private static function renderCommentMarkup($markup): EmailCommentMessage
 
   private static function createMarkupEngine($mode) {
     return PhabricatorMarkupEngine::newMarkupEngine(array())
-      ->setConfig('viewer', PhabricatorUser::getOmnipotentUser())
+      ->setConfig('viewer', new PhabricatorUser())
       ->setConfig('uri.base', PhabricatorEnv::getProductionURI('/'))
       ->setConfig('uri.full', true)
       ->setMode($mode);
   }
-}
+}