Add support for associated subject conversion in AccompanyingPeriodWorkSubjectConverter

- Updated `convert` method to append associated subjects when `$includeAssociated` is true.
- Modified `SubjectConverterManager` to pass `$includeAssociated` to converters during subject resolution.

src/Bundle/ChillMainBundle/Audit/SubjectConverterManager.php

@@ -36,7 +36,7 @@ final readonly class SubjectConverterManager implements SubjectConverterManagerI
             }
 
             if ($converter->supportsConvert($subject)) {
-                return $converter->convert($subject);
+                return $converter->convert($subject, $includeAssociated);
             }
         }