HarmonyOS Scroll是否支持onendreachedthreshold，配合endreached事件使用， 距离底部多少触发 endreached 事件

组件实现可通过判断偏移量来实现，demo如下：

import display from '@ohos.display';

@Entry
@Component
struct page240510141709017 {
  scroller: Scroller = new Scroller()
  @State yOffset: number = 0
  @State yPosition: number = 150
  private arr: number[] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  private childH: number = 0
  private screenH: number = 0

  build() {
    Column() {
      Scroll(this.scroller) {
        Column() {
          ForEach(this.arr, (item: number) => {
            Text(item.toString())
              .width('90%')
              .height(150)
              .backgroundColor(0xFFFFFF)
              .borderRadius(15)
              .fontSize(16)
              .textAlign(TextAlign.Center)
              .margin({ top: 10 })
          }, (item: string) => item)
        }
        .width('100%')
        .onAppear(() => {
          this.childH = this.scroller.getItemRect(0).height
          console.log('this.childH', this.childH)
        })
      }
      .scrollable(ScrollDirection.Vertical) // 滚动方向纵向
      .scrollBar(BarState.On) // 滚动条常驻显示
      .scrollBarColor(Color.Gray) // 滚动条颜色
      .scrollBarWidth(10) // 滚动条宽度
      .friction(0.6)
      .edgeEffect(EdgeEffect.None)
      .width('100%')
      .height('100%')
      .onDidScroll(() => {
        if (!this.screenH) {
          let displayClass: display.Display | null = null;
          displayClass = display.getDefaultDisplaySync()
          this.screenH = px2vp(displayClass.height)
          console.log('this.screenH', this.screenH)
        }
        const yCurrentOffset = this.scroller.currentOffset().yOffset
        console.log('yCurrentOffset', yCurrentOffset)
        if (yCurrentOffset < 100) {
          console.log('is < top 100')
        } else if (yCurrentOffset > this.childH - this.screenH - 100) {
          console.log('is > bottom 100')
        }
      })
    }.width('100%').height('100%').backgroundColor(0xDCDCDC)
  }