### 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)

switch (p_what) {
		case NOTIFICATION_ENTER_TREE: {
			// 
			collision_state.state = 0;
			platform_rid = RID();
			platform_object_id = ObjectID();
			motion_results.clear();
			platform_velocity = Vector3();
			platform_angular_velocity = Vector3();
		} break;
	}
}
void CharacterBody3D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("move_and_slide"), &CharacterBody3D::move_and_slide);
	ClassDB::bind_method(D_METHOD("apply_floor_snap"), &CharacterBody3D::apply_floor_snap);
	ClassDB::bind_method(D_METHOD("set_velocity", "velocity"), &CharacterBody3D::set_velocity);
	ClassDB::bind_method(D_METHOD("get_velocity"), &CharacterBody3D::get_velocity);
	ClassDB::bind_method(D_METHOD("set_safe_margin", "margin"), &CharacterBody3D::set_safe_margin);
	ClassDB::bind_method(D_METHOD("get_safe_margin"), &CharacterBody3D::get_safe_margin);
	ClassDB::bind_method(D_METHOD("is_floor_stop_on_slope_enabled"), &CharacterBody3D::is_floor_stop_on_slope_enabled);
	ClassDB::bind_method(D_METHOD("set_floor_stop_on_slope_enabled", "enabled"), &CharacterBody3D::set_floor_stop_on_slope_enabled);
	ClassDB::bind_method(D_METHOD("set_floor_constant_speed_enabled", "enabled"), &CharacterBody3D::set_floor_constant_speed_enabled);
	ClassDB::bind_method(D_METHOD("is_floor_constant_speed_enabled"), &CharacterBody3D::is_floor_constant_speed_enabled);
	ClassDB::bind_method(D_METHOD("set_floor_block_on_wall_enabled", "enabled"), &CharacterBody3D::set_floor_block_on_wall_enabled);
	ClassDB::bind_method(D_METHOD("is_floor_block_on_wall_enabled"), &CharacterBody3D::is_floor_block_on_wall_enabled);
	ClassDB::bind_method(D_METHOD("set_slide_on_ceiling_enabled", "enabled"), &CharacterBody3D::set_slide_on_ceiling_enabled);
	ClassDB::bind_method(D_METHOD("is_slide_on_ceiling_enabled"), &CharacterBody3D::is_slide_on_ceiling_enabled);