在 Tree 组件中使用 showLine 属性，无法自定义图标

[thrfox]

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

我查看了ant-design中的一个issues #14562，提供了SwicherIcon属性可用于自定义树形的icon，我查阅了文档没发现有相同的属性可用于配置该icon

What does the proposed API look like?

希望能提供同样的属性自定义该icon

[huanlirui]

+1 我也有这个问题。无法设置自定义展开图标

[Evenssi]

同求这个问题

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.