### 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
track_edit->set_timeline(timeline);
		track_edit->set_root(root);
		track_edit->set_animation_and_track(animation, i, file_read_only);
		track_edit->set_play_position(timeline->get_play_position());
		track_edit->set_editor(this);
		if (selected == i) {
			track_edit->grab_focus();
		}
		track_edit->connect("timeline_changed", callable_mp(this, &AnimationTrackEditor::_timeline_changed));
		track_edit->connect("remove_request", callable_mp(this, &AnimationTrackEditor::_track_remove_request), CONNECT_DEFERRED);
		track_edit->connect("dropped", callable_mp(this, &AnimationTrackEditor::_dropped_track), CONNECT_DEFERRED);
		track_edit->connect("insert_key", callable_mp(this, &AnimationTrackEditor::_insert_key_from_track).bind(i), CONNECT_DEFERRED);
		track_edit->connect("select_key", callable_mp(this, &AnimationTrackEditor::_key_selected).bind(i), CONNECT_DEFERRED);
		track_edit->connect("deselect_key", callable_mp(this, &AnimationTrackEditor::_key_deselected).bind(i), CONNECT_DEFERRED);
		track_edit->connect("move_selection_begin", callable_mp(this, &AnimationTrackEditor::_move_selection_begin));
		track_edit->connect("move_selection", callable_mp(this, &AnimationTrackEditor::_move_selection));
		track_edit->connect("move_selection_commit", callable_mp(this, &AnimationTrackEditor::_move_selection_commit));
		track_edit->connect("move_selection_cancel", callable_mp(this, &AnimationTrackEditor::_move_selection_cancel));
		track_edit->connect("duplicate_request", callable_mp(this, &AnimationTrackEditor::_edit_menu_pressed).bind(EDIT_DUPLICATE_SELECTION), CONNECT_DEFERRED);
		track_edit->connect("duplicate_transpose_request", callable_mp(this, &AnimationTrackEditor::_edit_menu_pressed).bind(EDIT_DUPLICATE_TRANSPOSED), CONNECT_DEFERRED);
		track_edit->connect("create_reset_request", callable_mp(this, &AnimationTrackEditor::_edit_menu_pressed).bind(EDIT_ADD_RESET_KEY), CONNECT_DEFERRED);
		track_edit->connect("delete_request", callable_mp(this, &AnimationTrackEditor::_edit_menu_pressed).bind(EDIT_DELETE_SELECTION), CONNECT_DEFERRED);
	}
}
void AnimationTrackEditor::_redraw_tracks() {
	for (int i = 0; i < track_edits.size(); i++) {
		track_edits[i]->queue_redraw();
	}
}
void AnimationTrackEditor::_redraw_groups() {