### 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)

toadd[toadd_count].shape = col_shape;
				toadd_count++;
				continue;
			}
			E->value.shapes[idx].tagged = true;
		}
		
		for (const KeyValue<ObjectID, BodyState> &E : contact_monitor->body_map) {
			for (int i = 0; i < E.value.shapes.size(); i++) {
				if (!E.value.shapes[i].tagged) {
					toremove[toremove_count].rid = E.value.rid;
					toremove[toremove_count].body_id = E.key;
					toremove[toremove_count].pair = E.value.shapes[i];
					toremove_count++;
				}
			}
		}
		
		for (int i = 0; i < toremove_count; i++) {
			_body_inout(0, toremove[i].rid, toremove[i].body_id, toremove[i].pair.body_shape, toremove[i].pair.local_shape);
		}
		
		for (int i = 0; i < toadd_count; i++) {
			_body_inout(1, toremove[i].rid, toadd[i].id, toadd[i].shape, toadd[i].local_shape);
		}
		contact_monitor->locked = false;
	}
	unlock_callback();
}
void RigidBody3D::_notification(int p_what) {