### Godot version

4.0.stable

### System information

Windows 10, Forward+, GTX 1070 driver 528.49

### Issue description

When trying to edit the handle mode of a bezier cruve key from the inspector tab, the mode doesn't change. It works fine when right clicking on the key and setting the handle mode from here though. 

https://user-images.githubusercontent.com/24484962/222379540-29d71b6d-ff0c-4a21-9905-9750d0581fda.mp4



### Steps to reproduce

On an animation track using a bezier curve, select a key and try to change the handle mode from the inspector tab

### Minimal reproduction project

N/A
animation = p_animation;
	read_only = p_read_only;
	length->set_read_only(read_only);
	if (animation.is_valid()) {
		len_hb->show();
		if (read_only) {
			add_track->hide();
		} else {
			add_track->show();
		}
		play_position->show();
	} else {
		len_hb->hide();
		add_track->hide();
		play_position->hide();
	}
	queue_redraw();
}
Size2 AnimationTimelineEdit::get_minimum_size() const {