fix(watermark): modify dom properties to regenerate (#7149)

Co-authored-by: “Jevin” <jevin@mogul-tech.com>

Author: kananramazandev

components/watermark/index.tsx

@@ -237,6 +237,8 @@ const Watermark = defineComponent({
     };
     useMutationObserver(containerRef, onMutate, {
       attributes: true,
+      subtree: true,
+      childList: true,
     });
     return () => {
       return (