[Feature] Add node arrangement information to the nodeHeight callback parameters.

[xiaoluoHe]

What problem does this feature solve?

在计算 nodeHeight 时，需要知道当前列有几个节点。 当前配置： 相关代码：

What does the proposed API look like?

 nodeHeight?: number | ((node: SankeyNodeElement, nodes: SankeyNodeElement[][]) => number);