### 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 {
					continue;
				}
			}
			InsertData id;
			id.path = animation->track_get_path(i);
			id.track_idx = i;
			id.value = value;
			id.type = Animation::TYPE_BEZIER;
			id.query = vformat(TTR("property '%s'"), p_property);
			id.advance = false;
			
			_query_insert(id);
			inserted = true;
		}
	}
	if (inserted || p_only_if_exists) {
		return;
	}
	InsertData id;
	id.path = np;
	id.track_idx = -1;
	id.value = p_value;
	id.type = Animation::TYPE_VALUE;
	id.query = vformat(TTR("property '%s'"), p_property);
	id.advance = false;
	
	_query_insert(id);
}
void AnimationTrackEditor::insert_value_key(const String &p_property, const Variant &p_value, bool p_advance) {