message: Some refactor for file question
diff: @@ -111,14 +111,20 @@ export class QuestionFileModel extends Question {
  this.setPropertyValue("maxSize", val);
  }
  /**
  - * The clean files value button caption.
  + * The no file chosen caption for modern theme
  */
  get noFileChosenCaption(): string {
  return surveyLocalization.getString("noFileChosen");
  }
  + /**
  + * The choose files value button caption for modern theme
  + */
  get chooseButtonCaption(): string {
  return surveyLocalization.getString("chooseFileCaption");
  }
  + /**
  + * The clean files value button caption.
  + */
  get cleanButtonCaption(): string {
  return surveyLocalization.getString("cleanCaption");
  }
  