Issue #2783395 by Mile23: Fix 'Drupal.Commenting.FunctionComment.InvalidReturn' coding standard

core/includes/bootstrap.inc

core/lib/Drupal/Component/PhpStorage/PhpStorageInterface.php

core/lib/Drupal/Core/Access/AccessResultReasonInterface.php

core/lib/Drupal/Core/Asset/LibraryDiscoveryInterface.php

.../Core/Authentication/AuthenticationCollectorInterface.php

.../lib/Drupal/Core/Authentication/AuthenticationManager.php

...thentication/AuthenticationProviderChallengeInterface.php

...l/Core/Authentication/AuthenticationProviderInterface.php

core/lib/Drupal/Core/Composer/Composer.php

core/lib/Drupal/Core/Config/ConfigCollectionInfo.php

...b/Drupal/Core/Config/Entity/ConfigEntityTypeInterface.php

core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php

core/lib/Drupal/Core/DrupalKernelInterface.php

core/lib/Drupal/Core/Entity/Controller/EntityController.php

.../Drupal/Core/EventSubscriber/AuthenticationSubscriber.php

...Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php

core/lib/Drupal/Core/Form/EnforcedResponse.php

core/lib/Drupal/Core/Menu/MenuActiveTrailInterface.php

core/lib/Drupal/Core/Menu/MenuLinkTreeElement.php

core/lib/Drupal/Core/Menu/MenuTreeStorageInterface.php