### 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
}
				}
			}
			undo_redo->add_do_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_undo_method(this, "_clear_selection_for_anim", animation);
			undo_redo->add_do_method(this, "_redraw_tracks");
			undo_redo->add_undo_method(this, "_redraw_tracks");
			undo_redo->commit_action();
			_update_key_edit();
		} break;
		case EDIT_OPTIMIZE_ANIMATION: {
			optimize_dialog->popup_centered(Size2(250, 180) * EDSCALE);
		} break;
		case EDIT_OPTIMIZE_ANIMATION_CONFIRM: {
			animation->optimize(optimize_velocity_error->get_value(), optimize_angular_error->get_value(), optimize_precision_error->get_value());
			_redraw_tracks();
			_update_key_edit();
			EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
			undo_redo->clear_history(true, undo_redo->get_history_id_for_object(animation.ptr()));
			undo_redo->clear_history(true, undo_redo->get_history_id_for_object(this));
		} break;
		case EDIT_CLEAN_UP_ANIMATION: {
			cleanup_dialog->popup_centered(Size2(300, 0) * EDSCALE);
		} break;
		case EDIT_CLEAN_UP_ANIMATION_CONFIRM: {
			if (cleanup_all->is_pressed()) {
				List<StringName> names;
				AnimationPlayerEditor::get_singleton()->get_player()->get_animation_list(&names);
				for (const StringName &E : names) {
					_cleanup_animation(AnimationPlayerEditor::get_singleton()->get_player()->get_animation(E));