### 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
} break;
			}
		}
	}
	return false;
}
void AnimationMultiTrackKeyEdit::_get_property_list(List<PropertyInfo> *p_list) const {
	if (animation.is_null()) {
		return;
	}
	int first_track = -1;
	float first_key = -1.0;
	bool same_track_type = true;
	bool same_key_type = true;
	for (const KeyValue<int, List<float>> &E : key_ofs_map) {
		int track = E.key;
		ERR_FAIL_INDEX(track, animation->get_track_count());
		if (first_track < 0) {
			first_track = track;
		}
		if (same_track_type) {
			if (animation->track_get_type(first_track) != animation->track_get_type(track)) {
				same_track_type = false;
				same_key_type = false;
			}
			for (const float &F : E.value) {
				int key = animation->track_find_key(track, F, Animation::FIND_MODE_APPROX);
				ERR_FAIL_COND(key == -1);
				if (first_key < 0) {
					first_key = key;