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/Controller/WorkflowController.php

@@ -333,7 +333,11 @@ class WorkflowController extends AbstractController
             $transitionForm = $this->createForm(
                 WorkflowStepType::class,
                 $entityWorkflow->getCurrentStep(),
-                ['transition' => true, 'entity_workflow' => $entityWorkflow, 'suggested_users' => $usersInvolved]
+                [
+                    'transition' => true,
+                    'entity_workflow' => $entityWorkflow,
+                    'suggested_users' => $usersInvolved
+                ]
             );
 
             $transitionForm->handleRequest($request);