### 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(AnimationTrackKeyEditEditor, EditorProperty);
	Ref<Animation> animation;
	int track = -1;
	real_t key_ofs = 0.0;
	bool use_fps = false;
	EditorSpinSlider *spinner = nullptr;
	struct KeyDataCache {
		real_t time = 0.0;
		float transition = 0.0;
		Variant value;
	} key_data_cache;
	void _time_edit_entered();
	void _time_edit_exited();
public:
	AnimationTrackKeyEditEditor(Ref<Animation> p_animation, int p_track, real_t p_key_ofs, bool p_use_fps);
	~AnimationTrackKeyEditEditor();
};
#endif