6 files declare their use of GetResponseForControllerResultEvent in Zircon Profile 8

AcceptNegotiation406.php in core/lib/Drupal/Core/EventSubscriber/AcceptNegotiation406.php

Contains \Drupal\Core\EventSubscriber\AcceptNegotiation406.

FormAjaxSubscriber.php in core/lib/Drupal/Core/Form/EventSubscriber/FormAjaxSubscriber.php

Contains \Drupal\Core\Form\EventSubscriber\FormAjaxSubscriber.

HttpKernel.php in vendor/symfony/http-kernel/HttpKernel.php

MainContentViewSubscriber.php in core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php

Contains \Drupal\Core\EventSubscriber\MainContentViewSubscriber.

PsrResponseSubscriber.php in core/lib/Drupal/Core/EventSubscriber/PsrResponseSubscriber.php

Contains \Drupal\Core\EventSubscriber\PsrResponseSubscriber.

TestDomainObjectViewSubscriber.php in core/modules/system/tests/modules/early_rendering_controller_test/src/TestDomainObjectViewSubscriber.php

Contains \Drupal\early_rendering_controller_test\TestDomainObjectViewSubscriber.