为什么 Table 树形数据展示设置列过滤，不会生效到子数据？

[Yee1014]

首先，列过滤没有应用到子数据是表格设计之初就这样子的吗？

还是功能未完善？

示例

配置：

const columns = [
  {
    // 其他配置
    title: 'Name',
    dataIndex: 'name',
    key: 'name',
    onFilter: (value, record) => record.name.toString().toLowerCase().includes(value.toLowerCase()),
  },
]

源码：
https://github.com/vueComponent/ant-design-vue/blob/main/components/table/hooks/useFilter/index.tsx#L167

export function getFilterData<RecordType>(
  data: RecordType[],
  filterStates: FilterState<RecordType>[],
) {
  return filterStates.reduce((currentData, filterState) => {
    const {
      column: { onFilter, filters },
      filteredKeys,
    } = filterState;
    if (onFilter && filteredKeys && filteredKeys.length) {
      return currentData.filter(record =>
        filteredKeys.some(key => {
          const keys = flattenKeys(filters);
          const keyIndex = keys.findIndex(k => String(k) === String(key));
          const realKey = keyIndex !== -1 ? keys[keyIndex] : key;
          return onFilter(realKey, record);
        }),
      );
    }
    return currentData;
  }, data);
}

onFilter 只作用于 dataSource 第一层数据。