message: fixed reawork for specify any type
diff: @@ -17,8 +17,7 @@ export class SurveyQuestionFile extends SurveyQuestionElementBase {
  }
  handleOnChange(event: any) {
  var src = event.target || event.srcElement;
  - var window: any = window;
  - if (!window["FileReader"]) return;
  + if (!(window as any)["FileReader"]) return;
  if (!src || !src.files || src.files.length < 1) return;
  let files = [];
  for (let i = 0; i < src.files.length; i++) {
  