HarmonyOS鸿蒙Next中如何解决半模态弹窗遮挡系统导航键的问题？换了api13就有这种情况，之前api9没有

写了一个demo，监听软件盘是否弹出，如果弹出把半模态加上软件盘的高度

// xxx.ets
import { window } from '@kit.ArkUI';

@Entry
@Component
struct SheetTransitionExample {
  @State isShow: boolean = false
  @State isShow2: boolean = false
  @State sheetHeight: number = 300;
  @State keyHeight: number = 0

  aboutToAppear() {
    window.getLastWindow(getContext(this)).then(currentWindow => {
      // 监听软键盘的隐藏和显示
      currentWindow.on('avoidAreaChange', data => {
        if (data.type == window.AvoidAreaType.TYPE_KEYBOARD) {
          if (px2vp(data.area.bottomRect.height) == 0) {
            this.keyHeight = 0
          } else {
            this.keyHeight = px2vp(data.area.bottomRect.height);
          }
          return;
        }
      })
    })
  }

  @Builder
  myBuilder() {
    Column() {
      TextInput()
    }
    .width('100%')
    .height('100%')
  }

  build() {
    Column() {
      Button("transition modal 1")
        .onClick(() => {
          this.isShow = true
        })
        .fontSize(20)
        .margin(10)
        .bindSheet($$this.isShow, this.myBuilder(), {
          height: this.sheetHeight + this.keyHeight,
          backgroundColor: Color.Green,
          onHeightDidChange: (data: number) => {
            console.info('xxx:' + data)
          }
        })
    }
    .justifyContent(FlexAlign.Center)
    .width('100%')
    .height('100%')
  }
}