Posting experiment status updates to Phabricator from the Test Kitchen backend to inform experiment owners of the status of their active experiments (i.e. invalid experiment configuration).
We collect the Phabricator task associated with an experiment as a required field upon experiment configuration registration.
See T428986: [GrowthBook Integration] Add write API key for Phabricator for Test Kitchen / T429377: Phabricator Bot Request: Test Kitchen Experiments Status Reporter
Responsible user or organisation: Experiment Platform, @cjming
