HarmonyOS 鸿蒙Next 装饰器传递给子组件的状态变量被修改后，父组件中对应字段没有同步修改

1、基础类型使用 @state 或者 @link 2、数据多层嵌套的情况下，目前是采用Observed + ObjectLInk

针对上述问题demo，给出优化代码如下：

@Entry

@Component

struct Page249053 {

  @State mTestViewModel: TestViewModel = TestViewModel.getInstance()

  build() {

    Column() {

      ForEach(this.mTestViewModel.bol, (item:boolean,index:number) => {

        SwitchView({

          mTestViewModel: this.mTestViewModel,

          index:index

        })

        Text(item+'88787878+')

      }, (item: string) => item)

    }

  }

}

@Component

struct SwitchView {

  @Link mTestViewModel: TestViewModel

  @State index:number=0

  build() {

    Column()

      .width(40)

      .height(40)

      .margin({bottom:20})

      .backgroundColor(this.mTestViewModel.bol[this.index] ? Color.Red : Color.Green)

      .onClick(() => {

        console.log(this.index+'09999')

        this.mTestViewModel.bol= this.mTestViewModel.bol.map((item,index)=>{

          if(index==this.index){

            return !item

          }else {

            return item

          }

        })

        console.log( this.mTestViewModel.bol+'99898989')

      })

  }

}

@Observed

export class TestViewModel {

  private static instance: TestViewModel;

  public static getInstance(): TestViewModel {

    if (!TestViewModel.instance) {

      TestViewModel.instance = new TestViewModel();

    }

    return TestViewModel.instance;

  }

  public switchState: boolean = false

  public switchState1: boolean = false

  public switchState2: boolean = false

  public switchState3: boolean = false

  public bol:boolean[]=[false,false,false,false]

}