AStar3D example code for _compute_cost() and _estimate_cost() nonsensical

[Nebulous5]

Your Godot version:
4.3 and Latest

Issue description:
The example code in the doc for AStar3D for _compute_cost(u,v) and _estimate_cost(u,v) makes no sense in both GDScript and C#. Unless I'm mistaken, u and v are point ids not point vectors, so these examples compute a value based on subtracting ids which is meaningless.

It should be something more like get_point_position(u).distance_to(get_point_position(v)) for points in euclidean space.

If the intent was really to compute/estimate a cost based on point ids, can someone explain in what situation these examples make any sense?

URL to the documentation page:
https://docs.godotengine.org/en/latest/classes/class_astar3d.html
https://docs.godotengine.org/en/stable/classes/class_astar3d.html

[tetrapod00]

Indeed, these examples don't make much sense. I suppose they could make sense if the "distance" you're measuring is the order that IDs were added?

Something like manhattan distance might be a better example to use.