### 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
undo_redo->add_do_method(this, "_clear_selection_for_anim", animation);
	undo_redo->add_undo_method(this, "_clear_selection_for_anim", animation);
	
	for (RBMap<SelectedKey, KeyInfo>::Element *E = selection.back(); E; E = E->prev()) {
		float oldpos = E->get().pos;
		float newpos = snap_time(oldpos + motion);
		undo_redo->add_do_method(this, "_select_at_anim", animation, E->key().track, newpos);
		undo_redo->add_undo_method(this, "_select_at_anim", animation, E->key().track, oldpos);
	}
	moving_selection = false;
	undo_redo->add_do_method(this, "_redraw_tracks");
	undo_redo->add_undo_method(this, "_redraw_tracks");
	undo_redo->commit_action();
}
void AnimationTrackEditor::_move_selection_cancel() {
	moving_selection = false;
	_redraw_tracks();
}
bool AnimationTrackEditor::is_moving_selection() const {
	return moving_selection;
}
float AnimationTrackEditor::get_moving_selection_offset() const {
	return moving_selection_offset;
}
void AnimationTrackEditor::_box_selection_draw() {
	const Rect2 selection_rect = Rect2(Point2(), box_selection->get_size());
	box_selection->draw_rect(selection_rect, get_theme_color(SNAME("box_selection_fill_color"), SNAME("Editor")));
	box_selection->draw_rect(selection_rect, get_theme_color(SNAME("box_selection_stroke_color"), SNAME("Editor")), false, Math::round(EDSCALE));
}
void AnimationTrackEditor::_scroll_input(const Ref<InputEvent> &p_event) {