add https://github.com/cure53/DOMPurify as optional dependency, if the page context uses it as a polyfill to window.Sanitizer behind the element attr `flag-sanitizerhttps://github.com/cure53/DOMPurify="true"`
add https://github.com/cure53/DOMPurify as optional dependency, if the page context uses it as a polyfill to window.Sanitizer behind the element attr `flag-sanitizerhttps://github.com/cure53/DOMPurify="true"`