fix(ThumbnailOverlayResumePlayback): Update percent_duration_watched type (#737)

src/parser/classes/ThumbnailOverlayResumePlayback.ts

@@ -4,10 +4,10 @@ import type { RawNode } from '../index.js';
 export default class ThumbnailOverlayResumePlayback extends YTNode {
   static type = 'ThumbnailOverlayResumePlayback';
 
-  percent_duration_watched: string; // TODO: is this a number?
+  percent_duration_watched: number;
 
   constructor(data: RawNode) {
     super();
     this.percent_duration_watched = data.percentDurationWatched;
   }
-}
+}