[Security] Do not make PasswordUpgraderInterface a generic

Author: wouterj

Security/User/EntityUserProvider.php

@@ -125,7 +125,7 @@ public function upgradePassword(PasswordAuthenticatedUserInterface $user, string
         }
 
         $repository = $this->getRepository();
-        if ($repository instanceof PasswordUpgraderInterface) {
+        if ($user instanceof PasswordAuthenticatedUserInterface && $repository instanceof PasswordUpgraderInterface) {
             $repository->upgradePassword($user, $newHashedPassword);
         }
     }