### Godot version

4.2 dev3

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

If you have a Method Track with multiple calls to the same method, they are joined together and makes things unreadable:
![image](https://github.com/godotengine/godot/assets/2223172/a2ab8446-28a1-440b-b0d5-5049f5d705b4)
The horizontal line shouldn't be used here. I think it might be a regression.

### Steps to reproduce

1. Add AnimationPlayer
2. Add a Method Track (with Add Track button)
3. Add some key to the track
4. Add another key with the same method

### Minimal reproduction project

N/A
in_group = p_enable;
	queue_redraw();
}
void AnimationTrackEdit::append_to_selection(const Rect2 &p_box, bool p_deselection) {
	if (animation->track_is_compressed(track)) {
		return; 
	}
	
	int limit_start_hitbox = timeline->get_name_limit() - type_icon->get_width();
	Rect2 select_rect(limit_start_hitbox, 0, get_size().width - timeline->get_name_limit() - timeline->get_buttons_width(), get_size().height);
	select_rect = select_rect.intersection(p_box);
	
	for (int i = animation->track_get_key_count(track) - 1; i >= 0; i--) {
		Rect2 rect = const_cast<AnimationTrackEdit *>(this)->get_key_rect(i, timeline->get_zoom_scale());
		float offset = animation->track_get_key_time(track, i) - timeline->get_value();
		offset = offset * timeline->get_zoom_scale() + timeline->get_name_limit();
		rect.position.x += offset;
		if (select_rect.intersects(rect)) {
			if (p_deselection) {
				emit_signal(SNAME("deselect_key"), i);
			} else {
				emit_signal(SNAME("select_key"), i, false);
			}
		}
	}
}
void AnimationTrackEdit::_bind_methods() {