fix: SA: Split critical issues in its own file.

SA stands for Static Analysis.

src/Bundle/ChillPersonBundle/Widget/PersonListWidget/PersonFilteringInterface.php

@@ -22,6 +22,8 @@ namespace Chill\PersonBundle\Widget\PersonListWidget;
 
 use Doctrine\ORM\EntityManager;
 use Chill\MainBundle\Entity\User;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Security\Core\User\UserInterface;
 
 
 /**
@@ -78,8 +80,7 @@ interface PersonFilteringInterface
 }
      * ```
      *
-     * @param EntityManager $em
      * @return int[] an array of persons id to show
      */
-    public function getPersonIds(EntityManager $em, User $user);
+    public function getPersonIds(EntityManagerInterface $em, UserInterface $user);
 }