### 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
GDCLASS(AnimationTrackEdit, Control);
	friend class AnimationTimelineEdit;
	enum {
		MENU_CALL_MODE_CONTINUOUS,
		MENU_CALL_MODE_DISCRETE,
		MENU_CALL_MODE_CAPTURE,
		MENU_INTERPOLATION_NEAREST,
		MENU_INTERPOLATION_LINEAR,
		MENU_INTERPOLATION_CUBIC,
		MENU_INTERPOLATION_LINEAR_ANGLE,
		MENU_INTERPOLATION_CUBIC_ANGLE,
		MENU_LOOP_WRAP,
		MENU_LOOP_CLAMP,
		MENU_KEY_INSERT,
		MENU_KEY_DUPLICATE,
		MENU_KEY_ADD_RESET,
		MENU_KEY_DELETE,
		MENU_USE_BLEND_ENABLED,
		MENU_USE_BLEND_DISABLED,
	};