### 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
get_editor_theme_icon(SNAME("InterpLinearAngle")),
					get_editor_theme_icon(SNAME("InterpCubicAngle")),
				};
				Ref<Texture2D> cont_icon[3] = {
					get_editor_theme_icon(SNAME("TrackContinuous")),
					get_editor_theme_icon(SNAME("TrackDiscrete")),
					get_editor_theme_icon(SNAME("TrackCapture"))
				};
				Ref<Texture2D> blend_icon[2] = {
					get_editor_theme_icon(SNAME("UseBlendEnable")),
					get_editor_theme_icon(SNAME("UseBlendDisable")),
				};
				int ofs = get_size().width - timeline->get_buttons_width();
				Ref<Texture2D> down_icon = get_theme_icon(SNAME("select_arrow"), SNAME("Tree"));
				draw_line(Point2(ofs, 0), Point2(ofs, get_size().height), linecolor, Math::round(EDSCALE));
				ofs += hsep;
				{
					
					Animation::UpdateMode update_mode;
					if (animation->track_get_type(track) == Animation::TYPE_VALUE) {
						update_mode = animation->value_track_get_update_mode(track);
					} else {
						update_mode = Animation::UPDATE_CONTINUOUS;
					}
					Ref<Texture2D> update_icon = cont_icon[update_mode];
					update_mode_rect.position.x = ofs;
					update_mode_rect.position.y = int(get_size().height - update_icon->get_height()) / 2;
					update_mode_rect.size = update_icon->get_size();
					if (!animation->track_is_compressed(track) && animation->track_get_type(track) == Animation::TYPE_VALUE) {
						draw_texture(update_icon, update_mode_rect.position);