Replace ArrayCollection with Collection&Selectable on some entity typing (fix previous commit)

Updated entity properties to use Collection&Selectable for better type safety and interoperability. This change affects User, Household, Calendar, Person, AccompanyingPeriod, and EntityWorkflow classes.

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

@@ -21,7 +21,6 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Order;
 use Doctrine\ORM\Mapping as ORM;
-use Exception;
 use Symfony\Component\Serializer\Annotation as Serializer;
 use Symfony\Component\Validator\Constraints as Assert;
 
@@ -278,7 +277,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
     }
 
     /**
-     * @throws Exception
+     * @throws \Exception
      */
     public function getStepsChained(): array
     {