HarmonyOS 自定义组件构造了ListItemGroup，但是在List组件中应用时被校验出不属于List子组件类型

demo如下：

ListPage.ets:

import TimeTable from './TimeTable'
import ListGroupItemComponent from './ListGroupItemComponent'

@Entry
@Component
struct ListPage {
  private timeTable: TimeTable[] = [
    {
      title: '星期一',
      projects: ['语文', '数学', '英语']
    },
    {
      title: '星期二',
      projects: ['物理', '化学', '生物']
    },
    {
      title: '星期三',
      projects: ['历史', '地理', '政治']
    },
    {
      title: '星期四',
      projects: ['美术', '音乐', '体育']
    }
  ]

  build() {
    Column() {
      List({ space: 20 }) {
        ForEach(this.timeTable, (item: TimeTable) => {
          ListGroupItemComponent({item: item});
        })
      }
      .width('90%')
      .sticky(StickyStyle.Header | StickyStyle.Footer)
      .scrollBar(BarState.Off)
    }.width('100%').height('100%').backgroundColor(0xDCDCDC).padding({ top: 5 })
  }
}


TimeTable.ets:

export default interface TimeTable {
  title: string;
  projects: string[];
}

ListGroupItemComponent .ets:

import TimeTable from './TimeTable'

@Component
export default struct ListGroupItemComponent {
  @Prop item: TimeTable;

  build() {
    ListItemGroup({ header: this.itemHead(this.item.title), footer: this.itemFoot(this.item.projects.length) }) {
      ForEach(this.item.projects, (project: string) => {
        ListItem() {
          Text(project)
            .width("100%")
            .height(100)
            .fontSize(20)
            .textAlign(TextAlign.Center)
            .backgroundColor(0xFFFFFF)
        }
      }, (item: string) => item)
    }
    .divider({ strokeWidth: 1, color: Color.Blue }) // 每行之间的分界线

  }

  @Builder
  itemHead(text: string) {
    Text(text)
      .fontSize(20)
      .backgroundColor(0xAABBCC)
      .width("100%")
      .padding(10)
  }

  @Builder
  itemFoot(num: number) {
    Text('共' + num + "节课")
      .fontSize(16)
      .backgroundColor(0xAABBCC)
      .width("100%")
      .padding(5)
  }
}