fix: maintenance heredity

server/model/monitor.js

@@ -1371,12 +1371,12 @@ class Monitor extends BeanModel {
             if (maintenance && await maintenance.isUnderMaintenance()) {
                 return true;
             }
+        }
 
         const parent = await Monitor.getParent(monitorID);
         if (parent != null) {
             return await Monitor.isUnderMaintenance(parent.id);
         }
-        }
 
         return false;
     }