Issue #3233466 by daffie: [Symfony 6] Add "ConstraintValidatorInterface" type...

Issue #3233466 by daffie: [Symfony 6] Add "ConstraintValidatorInterface" type hint to methods overiding Symfony\Component\Validator\ConstraintValidatorFactoryInterface::getInstance()

core/lib/Drupal/Core/Validation/ConstraintValidatorFactory.php

@@ -5,6 +5,7 @@
 use Drupal\Core\DependencyInjection\ClassResolverInterface;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidatorFactory as BaseConstraintValidatorFactory;
+use Symfony\Component\Validator\ConstraintValidatorInterface;
 
 /**
  * Defines a constraint validator factory that works with container injection.
@@ -26,7 +27,7 @@ public function __construct(ClassResolverInterface $class_resolver) {
   /**
    * {@inheritdoc}
    */
-  public function getInstance(Constraint $constraint) {
+  public function getInstance(Constraint $constraint): ConstraintValidatorInterface {
     $class_name = $constraint->validatedBy();
     // Constraint validator instances should always be initialized newly and
     // never shared, because the current validation context is getting injected