add label alignment in nodes in Sankey plot

Dear devs,

Recently, I have been playing around with Sankey plots in plotly. This tool is really great. I have been looking for a specific feature that I couldn't find in the API and in fact I believe it does not exist, yet.
Would it be possible to specifiy the alignment of the labels in the nodes of a sankey plot?
Specifically in vertical orientation, I believe the nodes would look much prettier, if the label may be horizontally aligned with the box.

I would imagine additional keywords for the node-dictionary like "horizontalalignment" and "verticalalignment".
(As it is the case for matplotlib textboxes :
https://matplotlib.org/3.1.1/tutorials/text/text_props.html)

Possibly, this is actually easily implemented, but I could not really figure out, how to do that myself.

Is it possible to add this feature?

この issue は Sankey ノードラベルの水平方向および垂直方向の配置を追加することに関するものですが、ソースファイル、テスト、エントリーポイントは指定されていません。まず Sankey ノード API の場所を特定し、リンクされている Matplotlib のテキストプロパティのリファレンスを確認してください。垂直方向の Sankey プロットで配置オプションがサポートされ、ドキュメント化されていれば完了です。