Fixed official yt embed player destruction

www/js/channel/mediaHandler.js

@@ -376,10 +376,13 @@ class youtubeEmbedHandler extends mediaHandler{
             this.video.destroy();
         }
 
+        //Check the f̶r̶i̶d̶g̶e video container for leftovers
+        const leftovers = this.player.videoContainer.querySelector("#youtube-embed-player");
+
         //If we have any leftovers
-        if(this.iframe != null){
+        if(leftovers != null){
             //Nukem like last nights chicken
-            iframe.remove();
+            leftovers.remove();
         }
 
         //Call derived destroy function