HarmonyOS 带小数vp，误差很大

通过justifyContent设置所有子组件在Flex容器主轴上的对齐格式SpaceBetween，此时最右边就不会有偏移。

参考demo如下：

// xxx.ets
import { LengthMetrics } from '@kit.ArkUI'

@Entry
@Component
struct FlexExample1 {
  @State textArr: string[] = ['0', '1', '2', '3', '4']

  build() {
    Column() {
      Flex({
        space: { main: LengthMetrics.px(10), cross: LengthMetrics.px(10) },
        wrap: FlexWrap.Wrap,
        direction: FlexDirection.Row,
        justifyContent: FlexAlign.SpaceBetween
      }) {
        ForEach(this.textArr, (item: string, index: number) => {
          Text('静')
            .width(50)
            .height(50)
            .backgroundColor(Color.Blue)
        })
      }
      .height(200)
      .width(110)
      .backgroundColor(0xAFEEEE)
    }.width('100%')
    .margin({ top: 5 })
  }
}