🧐[问题] 树形结构下，使用rowSelection功能使用，在toolBarRender中，rows不能获取到子节点

### 🧐 问题描述
树形结构下，使用rowSelection功能使用，在toolBarRender中，rows不能获取到子节点

### 💻 示例代码

### 🚑 其他信息
看了源码，是这样实现的，没有遍历children

```
const getRowKey = React.useMemo>(() => {
if (typeof rowKey === 'function') {
return rowKey;
}
return (record: T, index?: number) => {
if (index === -1) {
return (record as any)?.[rowKey as string];
}
// 如果 props 中有name 的话，用index 来做行号，这样方便转化为 index
if (props.name) {
return index?.toString();
}
return (record as any)?.[rowKey as string] ?? index?.toString();
};
}, [props.name, rowKey]);

useMemo(() => {
if (action.dataSource?.length) {
const keys = action.dataSource.map((data) => {
const dataRowKey = getRowKey(data, -1);
preserveRecordsRef.current.set(dataRowKey, data);
return dataRowKey;
});
return keys;
}
return [];
}, [action.dataSource, getRowKey]);
```

Start from the row-key and preserve-record logic shown in the issue, then inspect how tree-shaped data is handled for rowSelection and toolBarRender. Reproduce the problem with nested data and verify that rows includes selected child nodes; add or update a regression test if the repository has one.

Written by the indexing model from the issue text.