message: Update VideoHelper for v9.255
  Closes
diff: declare class VideoHelper {
  constructor();
  - /**
  - * A collection of HTML5 video objects which are currently active within the FVTT page
  - * @defaultValue `[]`
  - * @remarks This seems to be unused.
  - */
  - videos: HTMLVideoElement[];
  -
  /**
  * A user gesture must be registered before video playback can begin.
  * This Set records the video elements which await such a gesture.
  