Summary: `PhabricatorApplicationTransactionCommentView` performs `$uri = id(new PhutilURI('/login/'))->replaceQueryParam('next', (string)$this->getRequestURI())` but the constructor call in `PhabricatorEditEngine` does not set any `RequestURI` so the `Log In to Comment` button at the bottom of an object view does not redirect back to the object URI after login. Thus pass a `RequestURI` to `PhabricatorApplicationTransactionCommentView` in the constructor call in `PhabricatorEditEngine`. Closes T15837 Test Plan: As a Phorge admin, set `policy.allow-public` to true and create a Maniphest task with `Public` view policy. As an anonymous user, visit the task and click the `Log In to Comment` button at the bottom of the single task view, log in, and see that you get redirected to the task. Reviewers: O1 Blessed Committers, avivey Reviewed By: O1 Blessed Committers, avivey Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno Maniphest Tasks: T15837 Differential Revision: https://we.phorge.it/D25667