message: fix(Sticky): not work in some cases
diff: @@ -5,8 +5,7 @@ function isWindow(val: unknown): val is Window {
  }
  // get nearest scroll element
  -// http://w3help.org/zh-cn/causes/SD9013
  -// http://stackoverflow.com/questions/17016740/onscroll-function-is-not-working-for-chrome
  +// https://github.com/youzan/vant/issues/3823
  const overflowScrollReg = /scroll|auto/i;
  export function getScroller(el: HTMLElement, root: ScrollElement = window) {
  let node = el;
  @@ -14,25 +13,14 @@ export function getScroller(el: HTMLElement, root: ScrollElement = window) {
  while (
  node &&
  node.tagName !== 'HTML' &&
  + node.tagName !== 'BODY' &&
  node.nodeType === 1 &&
  node !== root
  ) {
  const { overflowY } = window.getComputedStyle(node);
  -
  if (overflowScrollReg.test(overflowY)) {
  - if (node.tagName !== 'BODY') {
  return node;
  }
  -
  - // see: https://github.com/youzan/vant/issues/3823
  - const { overflowY: htmlOverflowY } = window.getComputedStyle(
  - node.parentNode as Element
  - );
  -
  - if (overflowScrollReg.test(htmlOverflowY)) {
  - return node;
  - }
  - }
  node = node.parentNode as HTMLElement;
  }
  