PHP LogicException when processing Recurly webhooks that results in token replacement

This MR fixes the issues by converting all the responses returned from \Drupal\recurly\Controller\RecurlyPushListenerController::processPushNotification to use Symfony\Component\HttpFoundation\Response objects. Effectively this will change the response content from HTML to plain text. And bypasses core's early rendering safe guards. Since this page is really only intended for internal processing and to serve HTTP status codes to Recurly this shouldn't break anything.

I also updated one brittle test. The calculation performed in recurly_subscription_calculate_refund() depends on \Drupal::time()->getRequestTime() and as a result the output can vary slightly which causes intermittent test failures.

This looks good to me. And I'd love to get my logs cleaned up. Enthusiastic +1.

Automatically closed - issue fixed for 2 weeks with no activity.