refs #19182 [fid] display newsletter in profile

* set method get newsletter bool

module/fid/src/Service/DataTransferObject/User.php

@@ -409,6 +409,14 @@ class User
         }
     }
 
+    /**
+     * @return boolean
+     */
+    public function isNewsletter(): bool
+    {
+        return !empty($this->getData()["newsletter"]) ? $this->getData()["newsletter"] : 0;
+    }
+
     /**
      * @param Address[] $addresses
      */