Allow MFA enrollment before email verification

Summary: Depends on D18791. Ref T13024. This clears up another initialization order issue, where an unverified address could prevent MFA enrollment.

Test Plan: Configured both verification required and MFA required, clicked "Add Factor", got a dialog for the workflow.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13024

Differential Revision: https://secure.phabricator.com/D18792

src/applications/auth/controller/PhabricatorAuthNeedsMultiFactorController.php

@@ -15,6 +15,12 @@ final class PhabricatorAuthNeedsMultiFactorController
     return false;
   }
 
+  public function shouldRequireEmailVerification() {
+    // Users who haven't verified their email addresses yet can still enroll
+    // in MFA.
+    return false;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $viewer = $this->getViewer();