message: fix(@vant/use): useRect should always return DOMRect
diff: @@ -12,27 +12,12 @@ export const useRect = (
  if (isWindow(element)) {
  const width = element.innerWidth;
  const height = element.innerHeight;
  -
  - return {
  - top: 0,
  - left: 0,
  - right: width,
  - bottom: height,
  - width,
  - height,
  - };
  + return new DOMRect(0, 0, width, height);
  }
  if (element && element.getBoundingClientRect) {
  return element.getBoundingClientRect();
  }
  - return {
  - top: 0,
  - left: 0,
  - right: 0,
  - bottom: 0,
  - width: 0,
  - height: 0,
  - };
  + return new DOMRect(0, 0, 0, 0);
  };
  