Issue #3436741: Make Automatic Updates Extensions stable!

README.md

..._updates_extensions/automatic_updates_extensions.info.yml

automatic_updates_extensions/src/ExtensionUpdateStage.php

automatic_updates_extensions/src/Form/UpdateReady.php

automatic_updates_extensions/src/Form/UpdaterForm.php

...c_updates_extensions/tests/src/Build/ModuleUpdateTest.php

...sts/src/Functional/ComposerStagerOperationFailureTest.php

...es_extensions/tests/src/Functional/DisplayUpdatesTest.php

...updates_extensions/tests/src/Functional/PreUpdateTest.php

.../tests/src/Functional/StatusCheckerRunAfterUpdateTest.php

..._extensions/tests/src/Functional/SuccessfulUpdateTest.php

...xtensions/tests/src/Functional/UnsuccessfulUpdateTest.php

...dates_extensions/tests/src/Functional/UpdateErrorTest.php

...s_extensions/tests/src/Functional/UpdaterFormTestBase.php

...s/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php

..._extensions/tests/src/Kernel/ExtensionUpdateStageTest.php

...tests/src/Kernel/Validator/UpdateReleaseValidatorTest.php

...tic_updates_extensions/tests/src/Traits/FormTestTrait.php