Issue #3314764 by phenaproxima, tedbow, omkar.podey: Stop listening to ReadinessCheckEvent

automatic_updates.services.yml

automatic_updates_extensions/src/Form/UpdateReady.php

automatic_updates_extensions/src/Form/UpdaterForm.php

...dates_extensions/tests/src/Functional/UpdaterFormTest.php

...ates_extensions/tests/src/Kernel/ExtensionUpdaterTest.php

package_manager/src/StatusCheckTrait.php

...age_manager/src/Validator/ComposerExecutableValidator.php

package_manager/src/Validator/ComposerPatchesValidator.php

package_manager/src/Validator/ComposerSettingsValidator.php

package_manager/src/Validator/DiskSpaceValidator.php

...age_manager/src/Validator/EnvironmentSupportValidator.php

package_manager/src/Validator/LockFileValidator.php

package_manager/src/Validator/MultisiteValidator.php

...ager/src/Validator/OverwriteExistingPackagesValidator.php

package_manager/src/Validator/PendingUpdatesValidator.php

...ger/src/Validator/PreOperationStageValidatorInterface.php

package_manager/src/Validator/SettingsValidator.php

package_manager/src/Validator/SymlinkValidator.php

...age_manager/src/Validator/WritableFileSystemValidator.php

...er_test_validation/src/EventSubscriber/TestSubscriber.php