6 files declare their use of ConstraintManager in Drupal 10

ContextDefinitionIsSatisfiedTest.php in core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php

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

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

EntityContextDefinitionIsSatisfiedTest.php in core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php

RecursiveContextualValidatorTest.php in core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php

Contains \Drupal\Tests\Core\TypedData\RecursiveContextualValidatorTest.

TypedDataManager.php in core/lib/Drupal/Core/TypedData/TypedDataManager.php

TypedDataManagerInterface.php in core/lib/Drupal/Core/TypedData/TypedDataManagerInterface.php