Revert "Revert "Merge pull request #25420 from gaye/bug-821604" for Gu test failures"

This reverts commit eb8a140841f2fb2d8f28f45cbfd0bb053d8aa187.
Bug 821604 - Make sure we're augmenting the right chai with hasProperties
Bug 821604 - Emit pause event after revoking alarm
Merge pull request #25674 from gaye/reland-821604

Reland 821604