HarmonyOS 对象数组在@state修饰时，对象属性变化界面不刷新的解决办法

示例参考：

@Observed
export class PlateColorItem {
  id: string = '';
  isSelected: boolean = false;
  selectedColor: Color | string = ''
  title: string = ''

  constructor(id: string, isSelected: boolean = false, selectedColor: Color | string, title: string,) {
    this.id = id;
    this.isSelected = isSelected;
    this.selectedColor = selectedColor;
    this.title = title;
  }

  // function: (){}
}

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';
  @State
  plateColorItems: PlateColorItem[] = [
    new PlateColorItem('1', false, Color.Blue, '蓝牌'),
    new PlateColorItem('2', false, '#33E099', '绿牌'),
    new PlateColorItem('3', false, Color.Orange, '黄牌'),
    new PlateColorItem('4', false, '#12CCC0', '其他'),
  ];

  build() {
    Column() {
      test({ test: this.plateColorItems[3] })
    }
  }
}

@Component
struct test {
  @ObjectLink test: PlateColorItem

  build() {
    Text('hhhhh')
      .fontSize(px2vp(50))//.lineHeight(px2vp(54))
      .width(px2vp(200))
      .height(px2vp(114))
      .borderRadius(px2vp(7))
      .backgroundColor(this.test.isSelected ? Color.Orange : Color.Blue)
      .textAlign(TextAlign.Center)
      .onClick(() => {
        this.test.isSelected = true;
        // console.log("ddd"+this.plateColorItems);
      })
  }
}
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也可以看下试用版的@ObservedV2装饰器和@Trace装饰器：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/arkts-new-observedv2-and-trace-V5