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?

Das Issue betrifft das Hinzufügen der horizontalen und vertikalen Ausrichtung von Sankey-Knotenbeschriftungen, nennt jedoch keine Quelldateien, Tests oder Einstiegspunkte. Beginne damit, die Sankey-Knoten-API zu finden und die verlinkte Matplotlib-Referenz zu Texteigenschaften zu prüfen; fertig bedeutet, dass die Ausrichtungsoptionen für vertikal ausgerichtete Sankey-Diagramme unterstützt und dokumentiert sind.