Manually interpolating VehicleWheel

A VehicleWheel can easily push the physics interpolation of Godot 3.5 to its limits. See [this issue.](https://github.com/godotengine/godot/issues/72207) The [VehicleWheel documentation](https://docs.godotengine.org/en/stable/classes/class_vehiclewheel.html) does not mention this. Of course, not every known issue needs to be part of the docs. However, this one can occur by just having a fast car.

The documentation could explain the issue. It could also advise readers to turn off physics interpolation for affected meshes. Additionally, it could offer example code for interpolating them manually, such as:
```gdscript
func _process(_delta):
global_translation = get_parent().get_global_transform_interpolated().origin
```