Issue #3359077 by catch, alexpott, andypost: Resolve test failures on 11.x branch

...eed/tests/src/FunctionalJavascript/AlertsJsonFeedTest.php

...nouncements_feed/tests/src/Kernel/AnnounceFetcherTest.php

...cements_feed/tests/src/Kernel/AnnounceFetcherUserTest.php

...pics/tests/src/Functional/HelpTopicTranslatedTestBase.php

.../tests/src/Functional/LocaleNonInteractiveInstallTest.php

...les/system/tests/src/Functional/Module/DependencyTest.php

.../modules/system/tests/src/Functional/System/ThemeTest.php

...em/tests/src/Functional/UpdateSystem/UpdateScriptTest.php