HarmonyOS tabs切换问题

添加PanGesture手势来实现，参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/arkts-gesture-events-binding-V5#gesture常规手势绑定方法

@Entry
@Component
struct TabContentPage {
  @State message: string = 'Hello World';
  @Provide('count') count: number = 0;

  build() {
    Row() {
      Column() {
        Tabs({
          index: 0,
        }) {
          TabContent() {
            // Column().backgroundColor(Color.Red).width('50%').height('50%')
            TestConsumeAndProvideA()
          }
          .tabBar(new SubTabBarStyle('1'))
          .backgroundColor(Color.Blue)
          .gesture(PanGesture(new PanGestureOptions({ direction: PanDirection.Right })))

          TabContent() {
            // Column().backgroundColor(Color.Green).width('50%').height('50%')
            TestConsumeAndProvideA()
          }.tabBar(new SubTabBarStyle('2')).backgroundColor(Color.Red)

          TabContent() {
            // Column().backgroundColor(Color.Blue).width('50%').height('50%')
            TestConsumeAndProvideA()
          }
          .tabBar(new SubTabBarStyle('3'))
          .backgroundColor(Color.Green)
          .gesture(PanGesture(new PanGestureOptions({ direction: PanDirection.Left })))
        }
        .vertical(false)
        .scrollable(true)
        .animationDuration(0)
        .barMode(BarMode.Scrollable)
        .barHeight(56)
        .width('100%')
        .height('100%')
        .onChange((index: number) => {
          promptAction.showToast({ message: `当前的页面索引是${index}` })
          if (index === 1) {
            this.count = this.count + 1
          }
        })
        .barMode(BarMode.Scrollable)
      }
      .width('100%')
    }
    .height('100%')
  }
}

@Component
struct TestConsumeAndProvideA {
  build() {
    Text("测试")
  }
}
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