贺喜

### Chat2DB版本 1.0.6 ### Describe the bug 清晰的描述遇到的问题，并建议附上错误截图及错误日志。

SwitcherIconCom 组件不支持自定义loading

3

### Reproduction link [https://github.com/ant-design/ant-design/blob/master/components/tree/utils/iconUtil.tsx](https://github.com/ant-design/ant-design/blob/master/components/tree/utils/iconUtil.tsx) ### Steps to reproduce SwitcherIconCom 组件里如果是loading直接return了LoadingOutlined，导致无法自定义自定义Tree的loading效果 ### What is expected? 可以有渠道自定义Tree的loding图标 ### What is actually happening? 无法自定义Tree的loading的图标 | Environment | Info | | --- | ---...