Give ConduitAPIMethod->getMethodDescription() access to a real Viewer
Summary:
Ref T9964. The new `*.search` and `*.edit` methods generate documentation which depends on the viewer.
For example, the `*.search` methods show a reference table of the keys for all your saved queries.
Give them a real viewer to work with.
During normal execution, just populate this viewer with the request's viewer, so `$request->getViewer()` and `$this->getViewer()` both work and mean the same thing.
Test Plan: {F1023780}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9964
Differential Revision: https://secure.phabricator.com/D14761