Regarding the problem of unchecking the key of the Tree control #4727
Description
- I have searched the issues of this repository and believe that this is not a duplicate.
What problem does this feature solve?
页面内容与Tree 勾选的节点，进行数据展示联动，比如删除与新增。
What does the proposed API look like?
在Tree 控件中，无论是勾选还是取消勾选，每次返回的checkedKeys 都是当前Tree 节点勾选的key；
我希望，在我取消勾选时；api 能够返回当前取消勾选的key；以便进行业务逻辑操作；
十分感谢。