### 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
for (const KeyValue<int, List<float>> &E : key_ofs_map) {
		int track = E.key;
		for (const float &key_ofs : E.value) {
			int key = animation->track_find_key(track, key_ofs, Animation::FIND_MODE_APPROX);
			ERR_CONTINUE(key == -1);
			String name = p_name;
			if (name == "easing") {
				r_ret = animation->track_get_key_transition(track, key);
				return true;
			}
			switch (animation->track_get_type(track)) {
				case Animation::TYPE_POSITION_3D:
				case Animation::TYPE_ROTATION_3D:
				case Animation::TYPE_SCALE_3D: {
					if (name == "position" || name == "rotation" || name == "scale") {
						r_ret = animation->track_get_key_value(track, key);
						return true;
					}
				} break;
				case Animation::TYPE_BLEND_SHAPE:
				case Animation::TYPE_VALUE: {
					if (name == "value") {
						r_ret = animation->track_get_key_value(track, key);
						return true;
					}
				} break;
				case Animation::TYPE_METHOD: {
					Dictionary d = animation->track_get_key_value(track, key);
					if (name == "name") {
						ERR_FAIL_COND_V(!d.has("method"), false);