### 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
String path = p_path;
	
	for (int i = 0; i < animation->get_track_count(); i++) {
		String np = animation->track_get_path(i);
		if (path == np && animation->track_get_type(i) == Animation::TYPE_ANIMATION) {
			
			InsertData id;
			id.path = path;
			id.track_idx = i;
			id.value = p_value;
			id.type = Animation::TYPE_ANIMATION;
			
			id.query = TTR("animation");
			id.advance = false;
			
			_query_insert(id);
			return;
		}
	}
	InsertData id;
	id.path = path;
	id.track_idx = -1;
	id.value = p_value;
	id.type = Animation::TYPE_ANIMATION;
	id.query = TTR("animation");
	id.advance = false;
	
	_query_insert(id);
}
void AnimationTrackEditor::insert_node_value_key(Node *p_node, const String &p_property, const Variant &p_value, bool p_only_if_exists) {