HarmonyOS slider的block大小变大时，slider左右间距会自动变大，预期是长按拖动进度条的时候滑块变大、slider高度变高、宽度两侧保持不动，有什么好的方案

可参考示例如下：

@Entry
@Component
export struct Test5 {
  @State isDragging: boolean = false
  @State outSetValueOne: number = 40

  build() {
    Column({ space: 8 }) {
      Text('block').fontSize(9).fontColor(0xCCCCCC).margin(15).width('90%')
      Slider({ style: SliderStyle.OutSet, value: this.outSetValueOne })
        .onChange((value: number, mode: SliderChangeMode) => {
          if (mode == SliderChangeMode.Begin) {
            this.isDragging = true
          } else if (mode == SliderChangeMode.End) {
            this.isDragging = false
          }
          this.outSetValueOne = value
        })
        .margin({ left: this.isDragging ? -15 : -3, right: this.isDragging ? -14 : -2 })
        .trackColor(Color.Black)
        .layoutWeight(1)
        .blockColor(this.isDragging ? "#f2ff2e43" : Color.White)
        .blockSize({ width: this.isDragging ? 40 : 16, height: this.isDragging ? 40 : 16 })
        .selectedColor("#f2ff2e43")
        .trackThickness(this.isDragging ? 10 : 2)
        .blockBorderColor(this.isDragging ? "#80fe3b5d" : "")
        .blockBorderWidth(this.isDragging ? 22 : 0)
    }
  }
}