HarmonyOS listDirection(Axis.Horizontal) 高度自适应

根据最高的Item的高度作为整个List的高度。参考示例：

@Entry
@Component
struct ListExample {
  private arr: number[] = [110, 121, 560, 300, 24, 75, 96, 37, 558, 309]
  private arr1: string[] = ['2222222', '2222222', '2222222', '2222222', '2222222222222222', '22222222222222', '22222222', '22222222222222222222222222', '2222222', '2222222']
  // 动态高度状态变量
  @State maxHeight: number = 0
  build() {
    Column() {
      List({ space: 20, initialIndex: 0 }) {
        ForEach(this.arr, (item: number,index:number) => {
          ListItem() {
            Text(this.arr1[index] + item)
              .height(item)
              .fontSize(16)
              .textAlign(TextAlign.Center)
              .backgroundColor(0xFFFFFF)
          }.onAppear(()=>{
            console.log('fxm ' + item)
            this.maxHeight = Math.max(item,this.maxHeight)
          })
        }, (item: string) => item)
      }
      .listDirection(Axis.Horizontal) // 排列方向
      .scrollBar(BarState.Off)
      .friction(0.6)
      .edgeEffect(EdgeEffect.Spring) // 边缘效果设置为Spring
      .backgroundColor(Color.Gray)
      .width('100%')
      .height(this.maxHeight)
    }
    .backgroundColor(0xDCDCDC)
    .padding({ top: 25 })
  }
}