### 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
}
			} else {
				_cleanup_animation(animation);
			}
		} break;
	}
}
void AnimationTrackEditor::_cleanup_animation(Ref<Animation> p_animation) {
	for (int i = 0; i < p_animation->get_track_count(); i++) {
		bool prop_exists = false;
		Variant::Type valid_type = Variant::NIL;
		Object *obj = nullptr;
		Ref<Resource> res;
		Vector<StringName> leftover_path;
		Node *node = root->get_node_and_resource(p_animation->track_get_path(i), res, leftover_path);
		if (res.is_valid()) {
			obj = res.ptr();
		} else if (node) {
			obj = node;
		}
		if (obj && p_animation->track_get_type(i) == Animation::TYPE_VALUE) {
			valid_type = obj->get_static_property_type_indexed(leftover_path, &prop_exists);
		}
		if (!obj && cleanup_tracks->is_pressed()) {
			p_animation->remove_track(i);
			i--;
			continue;
		}
		if (!prop_exists || p_animation->track_get_type(i) != Animation::TYPE_VALUE || !cleanup_keys->is_pressed()) {
			continue;