Fixed: [workflow] validation of users in cc and dest

The validation is processed at the form step, so before the transition is processed

src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflow.php

@@ -16,6 +16,7 @@ use Chill\MainBundle\Doctrine\Model\TrackCreationTrait;
 use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
 use Chill\MainBundle\Doctrine\Model\TrackUpdateTrait;
 use Chill\MainBundle\Entity\User;
+use Chill\MainBundle\Validator\Constraints\Entity\WorkflowStepUsersOnTransition;
 use Chill\MainBundle\Workflow\Validator\EntityWorkflowCreation;
 use DateTimeInterface;
 use Doctrine\Common\Collections\ArrayCollection;
@@ -24,6 +25,7 @@ use Doctrine\ORM\Mapping as ORM;
 use Iterator;
 use RuntimeException;
 use Symfony\Component\Serializer\Annotation as Serializer;
+use Symfony\Component\Validator\Constraints as Assert;
 use function count;
 use function is_array;
 
@@ -97,7 +99,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
     /**
      * @ORM\OneToMany(targetEntity=EntityWorkflowStep::class, mappedBy="entityWorkflow", orphanRemoval=true, cascade={"persist"})
      * @ORM\OrderBy({"transitionAt": "ASC", "id": "ASC"})
-     *
+     * @Assert\Valid(traverse=true)
      * @var Collection|EntityWorkflowStep[]
      */
     private Collection $steps;