message: fix(NavBar): update placeholder height when window resized
diff: import { useRect } from '@vant/use';
  -import { Ref, ref, onMounted, nextTick } from 'vue';
  +import { Ref, ref, onMounted, nextTick, watch } from 'vue';
  +import { windowHeight, windowWidth } from '../utils';
  import { onPopupReopen } from './on-popup-reopen';
  export const useHeight = (
  @@ -32,5 +33,9 @@ export const useHeight = (
  // https://github.com/vant-ui/vant/issues/10628
  onPopupReopen(() => nextTick(setHeight));
  + // The height of the element may change when the window is resized
  + // https://github.com/youzan/vant/issues/11325
  + watch([windowWidth, windowHeight], setHeight);
  +
  return height;
  };
  