test phpdoc readonly

Author: staabm

tests/PHPStan/Rules/Classes/data/bug-12281.php

@@ -4,3 +4,7 @@
 
 #[\AllowDynamicProperties]
 readonly class BlogData { /* … */ }
+
+/** @readonly  */
+#[\AllowDynamicProperties]
+class BlogDataPhpdoc { /* … */ }