20 files declare their use of ContextAwarePluginInterface in Drupal 10

BlockAccessControlHandler.php in core/modules/block/src/BlockAccessControlHandler.php

BlockBase.php in core/lib/Drupal/Core/Block/BlockBase.php

BlockForm.php in core/modules/block/src/BlockForm.php

BlockViewBuilder.php in core/modules/block/src/BlockViewBuilder.php

ConfigureBlockFormBase.php in core/modules/layout_builder/src/Form/ConfigureBlockFormBase.php

ConfigureSectionForm.php in core/modules/layout_builder/src/Form/ConfigureSectionForm.php

ContextAwarePluginTraitTest.php in core/tests/Drupal/KernelTests/Core/Plugin/Context/ContextAwarePluginTraitTest.php

ContextHandler.php in core/lib/Drupal/Core/Plugin/Context/ContextHandler.php

ContextHandlerInterface.php in core/lib/Drupal/Core/Plugin/Context/ContextHandlerInterface.php

ContextHandlerTest.php in core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php

Contains \Drupal\Tests\Core\Plugin\ContextHandlerTest.

ContextHandlerTest.php in core/tests/Drupal/KernelTests/Core/Plugin/ContextHandlerTest.php

ExecutablePluginBase.php in core/lib/Drupal/Core/Executable/ExecutablePluginBase.php

ExtraFieldBlock.php in core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php

LayoutInterface.php in core/lib/Drupal/Core/Layout/LayoutInterface.php

MockComplexContextBlock.php in core/modules/system/tests/modules/plugin_test/src/Plugin/plugin_test/mock_block/MockComplexContextBlock.php

MockUserNameBlock.php in core/modules/system/tests/modules/plugin_test/src/Plugin/plugin_test/mock_block/MockUserNameBlock.php

SectionComponent.php in core/modules/layout_builder/src/SectionComponent.php

SectionRenderTest.php in core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php

SectionStorageInterface.php in core/modules/layout_builder/src/SectionStorageInterface.php

TypedDataStringBlock.php in core/modules/system/tests/modules/plugin_test/src/Plugin/plugin_test/mock_block/TypedDataStringBlock.php