### 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
Ref<Animation> reset = player->get_animation(SceneStringNames::get_singleton()->RESET);
			if (reset != p_from_animation) {
				for (int i = 0; i < reset->get_track_count(); i++) {
					if (reset->track_get_path(i) == p_from_animation->track_get_path(p_track)) {
						
						bool used = false;
						List<StringName> animation_list;
						player->get_animation_list(&animation_list);
						for (const StringName &anim_name : animation_list) {
							Ref<Animation> anim = player->get_animation(anim_name);
							if (anim == p_from_animation || anim == reset) {
								continue;
							}
							for (int j = 0; j < anim->get_track_count(); j++) {
								if (anim->track_get_path(j) == reset->track_get_path(i)) {
									used = true;
									break;
								}
							}
							if (used) {
								break;
							}
						}
						if (!used) {
							_animation_track_remove_request(i, reset);
						}
						break;
					}
				}
			}