HarmonyOS TextArea组件是否支持自定义emoji？

@Entry  
@Component  
struct RichEditorExample {  
  controller: RichEditorController = new RichEditorController();  
  private imgs: (string | number | Resource)[] = [$r('app.media.image1'), $r('app.media.image2'), $r('app.media.image3'), 1, 2, 3, 4, 5, 6, String.fromCodePoint(0x1F600)];  
  
  // 自定义键盘组件  
  @Builder  
  CustomKeyboardBuilder() {  
    Column() {  
      Grid() {  
        ForEach(this.imgs, (item: string | number | Resource) => {  
          GridItem() {  
            if (typeof item === 'number' || typeof item === 'string') {  
              Button(item + '')  
                .width(110).onClick(() => {  
                this.controller.addTextSpan(item + '', {  
                  offset: this.controller.getCaretOffset(),  
                  style:  
                  {  
                    fontColor: Color.Orange,  
                    fontSize: 30  
                  }  
                })  
                this.controller.setCaretOffset(this.controller.getCaretOffset() + item.toString().length)  
              })  
            } else {  
              Image(item)  
                .width(110).onClick(() => {  
                this.controller.addImageSpan(item, {  
                  imageStyle:  
                  {  
                    size: ['110px', '110px']  
                  }  
                })  
              })  
            }  
          }  
        })  
      }.maxCount(3).columnsGap(10).rowsGap(10).padding(5)  
    }.backgroundColor(Color.Gray)  
  }  
  build() {  
    Column() {  
      RichEditor({ controller: this.controller })// 绑定自定义键盘  
        .customKeyboard(this.CustomKeyboardBuilder())  
        .margin(10)  
        .border({ width: 1 })  
        .height(200)  
        .borderWidth(1)  
        .borderColor(Color.Red)  
        .width('100%')  
    }  
  }  
}
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