Add guards and tests for entity workflow transitions

Introduced EntityWorkflowGuardUnsignedTransition to block transitions with pending signatures. Implemented a new center resolver and added comprehensive unit tests for verifying transition rules and permissions.

src/Bundle/ChillPersonBundle/Security/CenterResolver/AccompanyingPeriodWorkEvaluationDocumentCenterResolver.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\PersonBundle\Security\CenterResolver;
+
+use Chill\MainBundle\Entity\Center;
+use Chill\MainBundle\Security\Resolver\CenterResolverInterface;
+use Chill\MainBundle\Security\Resolver\ManagerAwareCenterResolverInterface;
+use Chill\MainBundle\Security\Resolver\ManagerAwareCenterResolverTrait;
+use Chill\PersonBundle\Entity\AccompanyingPeriod\AccompanyingPeriodWorkEvaluationDocument;
+
+final class AccompanyingPeriodWorkEvaluationDocumentCenterResolver implements CenterResolverInterface, ManagerAwareCenterResolverInterface
+{
+    use ManagerAwareCenterResolverTrait;
+
+    public static function getDefaultPriority(): int
+    {
+        return 0;
+    }
+
+    public function resolveCenter($entity, ?array $options = []): Center|array
+    {
+        /* @var $entity AccompanyingPeriodWorkEvaluationDocument */
+        return $this->centerResolverManager->resolveCenters($entity->getAccompanyingPeriodWorkEvaluation()
+            ->getAccompanyingPeriodWork()->getAccompanyingPeriod(), $options);
+    }
+
+    public function supports($entity, ?array $options = []): bool
+    {
+        return $entity instanceof AccompanyingPeriodWorkEvaluationDocument;
+    }
+}