Contrib: Issue #3257849 by tedbow: Various core quality updates -...

core/modules/auto_updates/auto_updates.info.yml

core/modules/auto_updates/auto_updates.install

core/modules/auto_updates/auto_updates.module

core/modules/auto_updates/auto_updates.routing.yml

core/modules/auto_updates/src/Event/ReadinessCheckEvent.php

...to_updates/src/Validator/PackageManagerReadinessCheck.php

core/modules/auto_updates/tests/src/Build/UpdateTestBase.php

...ReadinessValidation/PackageManagerReadinessChecksTest.php

...ernel/ReadinessValidation/StagedProjectsValidatorTest.php

core/modules/package_manager/package_manager.info.yml

core/modules/package_manager/package_manager.install

core/modules/package_manager/package_manager.services.yml

core/modules/package_manager/src/ComposerUtility.php

core/modules/package_manager/src/Event/PostDestroyEvent.php

core/modules/package_manager/src/Event/PostRequireEvent.php

core/modules/package_manager/src/Event/PreDestroyEvent.php

...ules/package_manager/src/Event/PreOperationStageEvent.php

core/modules/package_manager/src/Event/PreRequireEvent.php

...e_manager/src/EventSubscriber/ExcludedPathsSubscriber.php

core/modules/package_manager/src/FileSyncerFactory.php