Issue #3469814 by christian.wiedemann, just_like_good_vibes: [2.0.0-beta2] Kernel Source Tests

...st/components/test-component/test-component.component.yml

...tterns_test/components/test-component/test-component.twig

tests/modules/ui_patterns_test/ui_patterns_test.tokens.inc

tests/src/Kernel/Source/FieldPropertySourceTest.php

tests/src/Kernel/Source/TextWidgetTest.php

tests/src/Kernel/Source/TokenSourceTest.php

tests/src/Kernel/SourcePluginsTestBase.php

tests/src/Traits/RunSourcePluginTestTrait.php

tests/src/Traits/TestContentCreationTrait.php

tests/src/Traits/TestDataTrait.php

tests/src/fixtures/TestDataSet.yml