### 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
info_message->set_visible(p_show);
}
bool AnimationTrackEditor::is_key_selected(int p_track, int p_key) const {
	SelectedKey sk;
	sk.key = p_key;
	sk.track = p_track;
	return selection.has(sk);
}
bool AnimationTrackEditor::is_selection_active() const {
	return selection.size();
}
bool AnimationTrackEditor::is_snap_enabled() const {
	return snap->is_pressed() ^ Input::get_singleton()->is_key_pressed(Key::CTRL);
}
void AnimationTrackEditor::_update_tracks() {
	int selected = _get_track_selected();
	while (track_vbox->get_child_count()) {
		memdelete(track_vbox->get_child(0));
	}
	timeline->set_track_edit(nullptr);
	track_edits.clear();
	groups.clear();
	if (animation.is_null()) {
		return;
	}
	bool file_read_only = false;
	if (!animation->get_path().is_resource_file()) {
		int srpos = animation->get_path().find("::");
		if (srpos != -1) {