### 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
key_ofs = p_key_ofs;
	use_fps = p_use_fps;
	set_label("Time");
	spinner = memnew(EditorSpinSlider);
	spinner->set_focus_mode(Control::FOCUS_CLICK);
	spinner->set_min(0);
	spinner->set_allow_greater(true);
	spinner->set_allow_lesser(true);
	if (use_fps) {
		spinner->set_step(1);
		spinner->set_hide_slider(true);
		real_t fps = animation->get_step();
		if (fps > 0) {
			fps = 1.0 / fps;
		}
		spinner->set_value(key_ofs * fps);
	} else {
		spinner->set_step(0.0001);
		spinner->set_value(key_ofs);
		spinner->set_max(animation->get_length());
	}
	add_child(spinner);
	spinner->connect("grabbed", callable_mp(this, &AnimationTrackKeyEditEditor::_time_edit_entered), CONNECT_DEFERRED);
	spinner->connect("ungrabbed", callable_mp(this, &AnimationTrackKeyEditEditor::_time_edit_exited), CONNECT_DEFERRED);
	spinner->connect("value_focus_entered", callable_mp(this, &AnimationTrackKeyEditEditor::_time_edit_entered), CONNECT_DEFERRED);
	spinner->connect("value_focus_exited", callable_mp(this, &AnimationTrackKeyEditEditor::_time_edit_exited), CONNECT_DEFERRED);
}
AnimationTrackKeyEditEditor::~AnimationTrackKeyEditEditor() {
}