fix: prevent error for root shadow elements when restorEl is enabled (v…

…ideojs#8679)

Addresses an issue where activating the `restoreEl` option for an element at the root of a shadow DOM threw a "TypeError: el.parentNode.hasAttribute is not a function". The bug was due to the `parentNode` being a shadow root, which does not have the `hasAttribute` method.

The fix implemented checks for the existence of the `hasAttribute` method on `parentNode`.

src/js/video.js

@@ -167,7 +167,7 @@ function videojs(id, options, ready) {
   // Store a copy of the el before modification, if it is to be restored in destroy()
   // If div ingest, store the parent div
   if (options.restoreEl === true) {
-    options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);
+    options.restoreEl = (el.parentNode && el.parentNode.hasAttribute && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);
   }
 
   hooks('beforesetup').forEach((hookFunction) => {