HarmonyOS 半模态bindSheet每次弹出，其内容都会重新绘制，有没有参数设置能让其保持上次关闭前的状态

半模态的参数直接使用@State修饰，下次打开还是上次的参数。

demo：

// xxx.ets
@Entry
@Component
struct SheetTransitionExample {
  @State isShow:boolean = false
  @State isShow2:boolean = false
  @State sheetHeight:number = 300;
  @State text:string='xxxxx'

  @Builder myBuilder() {
    Column() {
      Text(this.text)
        .margin(10)
        .fontSize(20)
        .onClick(()=>{
          this.sheetHeight = 500;
          this.text='wewewewa'
        })
    }
    .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,
          backgroundColor: Color.Green,
          onAppear: () => {console.log("BindSheet onAppear.")},
          onDisappear: () => {console.log("BindSheet onDisappear.")}
        })
    }
    .justifyContent(FlexAlign.Center)
    .width('100%')
    .height('100%')
  }
}