### Godot version

4.0.rc

### System information

Any

### Issue description

If the RESET animation is generated at the same time as the Bezier track is generated, the bezier edit button will not be active.

![image](https://user-images.githubusercontent.com/61938263/218256176-88b1b196-7b6b-4404-84ad-e8694f23bb1b.png)

Also, if you delete a track in the Bezier Editor, or in undo redo, it will not update correctly.

### Steps to reproduce

![image](https://user-images.githubusercontent.com/61938263/218256230-4b0219d5-87e4-453a-8294-59f8feb0cfd5.png)


### Minimal reproduction project

N/A
if (!animation.is_valid()) {
		return;
	}
	if (p_x < p_clip_left || p_x > p_clip_right) {
		return;
	}
	Ref<Texture2D> icon_to_draw = p_selected ? selected_icon : type_icon;
	if (animation->track_get_type(track) == Animation::TYPE_VALUE && !Math::is_equal_approx(animation->track_get_key_transition(track, p_index), real_t(1.0))) {
		
		icon_to_draw = get_theme_icon(p_selected ? SNAME("KeyEasedSelected") : SNAME("KeyValueEased"), SNAME("EditorIcons"));
	}
	
	if (!p_selected && animation->track_get_type(track) == Animation::TYPE_VALUE) {
		const Variant &v = animation->track_get_key_value(track, p_index);
		Variant::Type valid_type = Variant::NIL;
		if (!_is_value_key_valid(v, valid_type)) {
			icon_to_draw = get_theme_icon(SNAME("KeyInvalid"), SNAME("EditorIcons"));
		}
	}
	Vector2 ofs(p_x - icon_to_draw->get_width() / 2, int(get_size().height - icon_to_draw->get_height()) / 2);
	if (animation->track_get_type(track) == Animation::TYPE_METHOD) {
		Ref<Font> font = get_theme_font(SNAME("font"), SNAME("Label"));
		int font_size = get_theme_font_size(SNAME("font_size"), SNAME("Label"));
		Color color = get_theme_color(SNAME("font_color"), SNAME("Label"));
		color.a = 0.5;
		Dictionary d = animation->track_get_key_value(track, p_index);