### Godot version

v4.0.3.stable.official [5222a99f5]

### System information

Windows 10

### Issue description

If a `CharacterBody3D`'s parent node is in a position other than the origin, the difference will be included in its `get_position_delta()` value, and therefore also `get_real_velocity()`. This is because [the implementation](https://github.com/godotengine/godot/blob/3710f069293f2fde8afe33fea898c4b36fa5e943/scene/3d/physics_body_3d.cpp#L1782-L1784) subtracts the current **local** transform from the old **global** transform. I don't know if behaviour in this case is defined at all, but I would expect it to be consistent with everything else in the `CharacterBody3D` context, such that if `velocity` is zero, `get_position_delta()` is also zero. The same applies to `CharacterBody2D`.

### Steps to reproduce

1. Create a `Node3D` with a `CharacterBody3D` in it
2. Move the `Node3D`
3. Call `move_and_slide()` in the `CharacterBody3D` and observe `get_position_delta()`

### Minimal reproduction project

[godot cb3d.zip](https://github.com/godotengine/godot/files/11861307/godot.cb3d.zip)

PackedStringArray warnings = CollisionObject3D::get_configuration_warnings();
	Vector3 scale = get_transform().get_basis().get_scale();
	if (ABS(scale.x - 1.0) > 0.05 || ABS(scale.y - 1.0) > 0.05 || ABS(scale.z - 1.0) > 0.05) {
		warnings.push_back(RTR("Scale changes to RigidBody3D will be overridden by the physics engine when running.\nPlease change the size in children collision shapes instead."));
	}
	return warnings;
}
void RigidBody3D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_mass", "mass"), &RigidBody3D::set_mass);
	ClassDB::bind_method(D_METHOD("get_mass"), &RigidBody3D::get_mass);
	ClassDB::bind_method(D_METHOD("set_inertia", "inertia"), &RigidBody3D::set_inertia);
	ClassDB::bind_method(D_METHOD("get_inertia"), &RigidBody3D::get_inertia);
	ClassDB::bind_method(D_METHOD("set_center_of_mass_mode", "mode"), &RigidBody3D::set_center_of_mass_mode);
	ClassDB::bind_method(D_METHOD("get_center_of_mass_mode"), &RigidBody3D::get_center_of_mass_mode);
	ClassDB::bind_method(D_METHOD("set_center_of_mass", "center_of_mass"), &RigidBody3D::set_center_of_mass);
	ClassDB::bind_method(D_METHOD("get_center_of_mass"), &RigidBody3D::get_center_of_mass);
	ClassDB::bind_method(D_METHOD("set_physics_material_override", "physics_material_override"), &RigidBody3D::set_physics_material_override);
	ClassDB::bind_method(D_METHOD("get_physics_material_override"), &RigidBody3D::get_physics_material_override);