message: Fix type error error for react build
diff: @@ -13,6 +13,7 @@ import { ISurveyCreator } from "./reactquestion";
  import { surveyCss } from "../defaultCss/cssstandard";
  import { ReactQuestionFactory } from "./reactquestionfactory";
  import { SurveyModel } from "../survey";
  +import { Question } from "../question";
  export class SurveyQuestionPanelDynamic extends SurveyQuestionElementBase {
  constructor(props: any) {
  @@ -146,7 +147,7 @@ export class SurveyQuestionPanelDynamic extends SurveyQuestionElementBase {
  }
  protected rendrerPrevButton() {
  - var getButtonPrevCss = question => {
  + var getButtonPrevCss = (question: Question) => {
  var btnClasses = question.cssClasses.buttonPrev;
  if (!question.isPrevButtonShowing) {
  btnClasses += " " + question.cssClasses.buttonPrev + "--disabled";
  @@ -167,7 +168,7 @@ export class SurveyQuestionPanelDynamic extends SurveyQuestionElementBase {
  );
  }
  protected rendrerNextButton() {
  - var getButtonNextCss = function(question) {
  + var getButtonNextCss = function(question: Question) {
  var btnClasses = question.cssClasses.buttonNext;
  if (!question.isNextButtonShowing) {
  btnClasses += " " + question.cssClasses.buttonNext + "--disabled";
  