Misleading description for `Animation::copy_track`

[poohcom1]

Your Godot version:

4.2dev6

Issue description:

The copy_track method from Animation suggests that the method will copy the track from the parameter to_animation to the base object:

Adds a new track that is a copy of the given track from to_animation.

However, the source code shows that it's the other way around; it copies a track from the base object to to_animation:

https://github.com/godotengine/godot/blob/1ab77f410e5a21dbedb019cdbf723470459e5dbe/scene/resources/animation.cpp#L3795-L3813

URL to the documentation page:

https://docs.godotengine.org/en/latest/classes/class_animation.html#class-animation-method-copy-track