HarmonyOS 使用Tabs将barMode设置为Scrollable，数据量大的时显示正常，数据量小的时居中显示，数据量小时如何实现居左显示

参考示例如下：

// xxx.ets
@Entry
@Component
struct ListExample {
  private scrollerController = new Scroller()
  private arr: number[] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  @State currentIndex: number = 0
  @State fontColor: string = '#606A7E'
  @State selectedFontColor: string = '#FFFFFF'

  build() {
    Column() {
      List({ space: 20, initialIndex: 0, scroller: this.scrollerController }) {
        ForEach(this.arr, (item: number, index: number) => {
          ListItem() {
            Text(item.toString())
              .fontColor(this.currentIndex === index ? this.selectedFontColor : this.fontColor)
              .fontSize(14)
              .fontWeight(this.currentIndex === index ? 500 : 400)
              .padding({
                left: 10,
                top: 5,
                bottom: 5,
                right: 10
              })
              .textAlign(TextAlign.Center)
              .backgroundColor(this.currentIndex === index ? '#124EE6' : '#F5F6F8')
              .borderRadius(2)
              .width(90)
              .height('100%')
          }
          .onClick(() => {
            this.currentIndex = index
            this.scrollerController.scrollToIndex(this.currentIndex, true, ScrollAlign.CENTER)
          })
        }, (item: string) => item)
      }
      .listDirection(Axis.Horizontal) // 排列方向
      .scrollBar(BarState.Off)
      .friction(0.6)
      .divider({
        strokeWidth: 2,
        color: 0xFFFFFF,
        startMargin: 20,
        endMargin: 20
      }) // 每行之间的分界线
      .edgeEffect(EdgeEffect.Spring) // 边缘效果设置为Spring
      .width('90%')
    }
    .width('100%')
    .height('10%')
    .backgroundColor(0xDCDCDC)
    .padding({ top: 5 })
  }
}
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