table prop `childrenColumnName` should accept value `null` or `false`

[aimagic]

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

What problem does this feature solve?

to disable tree data display and AVOID NAME CONFLICT

What does the proposed API look like?

<a-table :children-column-name="null"></a-table> or <a-table :children-column-name="false"></a-table>

[aimagic]

and I suggest childrenColumnName be disabled by default.

when using expandable row and a children existing in dataSource accidentally, it will cause a confusing rendering bug.

[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.