8 files declare their use of RefinableCacheableDependencyTrait in Drupal 9

AccessResult.php in core/lib/Drupal/Core/Access/AccessResult.php

Breadcrumb.php in core/lib/Drupal/Core/Breadcrumb/Breadcrumb.php

ComputedTestCacheableString.php in core/modules/system/tests/modules/entity_test/src/Plugin/DataType/ComputedTestCacheableString.php

ConfigBase.php in core/lib/Drupal/Core/Config/ConfigBase.php

EntityBase.php in core/lib/Drupal/Core/Entity/EntityBase.php

PageDisplayVariantSelectionEvent.php in core/lib/Drupal/Core/Render/PageDisplayVariantSelectionEvent.php

SearchPluginBase.php in core/modules/search/src/Plugin/SearchPluginBase.php

VariantBase.php in core/lib/Drupal/Core/Display/VariantBase.php