message: Do not  hide previous button if  survey.maxTimeToFinish property is greater than 0.
diff: @@ -1583,7 +1583,6 @@ export class SurveyModel extends Base
  }
  public get isShowPrevButton(): boolean {
  if (this.isFirstPage || !this.showPrevButton) return false;
  - if (this.maxTimeToFinish > 0) return false;
  var page = this.visiblePages[this.currentPageNo - 1];
  return this.getPageMaxTimeToFinish(page) <= 0;
  }
  