Issue in 2.23 with using labels for draw_hierarchy

The example here (https://gist.github.com/FlxVctr/e51db25ba5166243f784ff8109a2517f) worked in 2.22 but does not work in 2.23 anymore. Apparently, because now using the property map of another graph raises an error. I see that this makes sense, but maybe it might be worth considering to just raise a warning (if I'm right that that's the issue).

Any better way to have the hierarchy tree labeled with the block numbers in this example?