[DoctrineBridge] Restore compatibility with Doctrine ODM by validating $class object type

Author: pepeh

src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Bridge\Doctrine\Validator\Constraints;
 
-use Doctrine\ORM\Mapping\ClassMetadata as OrmClassMetadata;
 use Doctrine\Persistence\ManagerRegistry;
 use Doctrine\Persistence\Mapping\ClassMetadata;
 use Doctrine\Persistence\ObjectManager;
@@ -93,7 +92,7 @@ public function validate(mixed $entity, Constraint $constraint)
                 throw new ConstraintDefinitionException(sprintf('The field "%s" is not mapped by Doctrine, so it cannot be validated for uniqueness.', $fieldName));
             }
 
-            if (property_exists(OrmClassMetadata::class, 'propertyAccessors')) {
+            if (property_exists($class, 'propertyAccessors')) {
                 $fieldValue = $class->propertyAccessors[$fieldName]->getValue($entity);
             } else {
                 $fieldValue = $class->reflFields[$fieldName]->getValue($entity);