add workflow on evaluationdocument in UI

src/Bundle/ChillPersonBundle/Serializer/Normalizer/AccompanyingPeriodWorkEvaluationNormalizer.php

@@ -49,6 +49,15 @@ class AccompanyingPeriodWorkEvaluationNormalizer implements ContextAwareNormaliz
             [self::IGNORE_EVALUATION => spl_object_hash($object)]
         ));
 
+        // due to bug: https://api-platform.com/docs/core/serialization/#collection-relation
+        // and also: https://github.com/symfony/symfony/issues/36965
+        // we have to rewrite the documents as a collection
+        $initial['documents'] = $this->normalizer->normalize(
+            $object->getDocuments()->getValues(),
+            $format,
+            $context
+        );
+
         // then, we add normalization for things which are not into the entity
 
         $initial['workflows_availables'] = $this->metadataExtractor->availableWorkflowFor(