Bug Report: Erect Pico Stage songs have a Null Object Reference to `cutsceneTimerManager`, causing shaders to not display.

Issue Checklist

[X] I have properly named the issue
[X] I have checked the issues/discussions pages to see if the issue has been previously reported

What platform are you using?

Itch.io (Downloadable Build) - Windows

If you are playing on a browser, which one are you using?

None

Version

0.5.0

Context (Provide images, videos, etc.)

Any Erect/Nightmare song on the PhillyTrain stage will have a Null Object Reference if having played the Pico Mix previously.

A simple fix would just be to boolean before the null check?

    playPicoCutscene = !hasPlayedInGameCutscene && 
            PlayState.instance.currentStage.getBoyfriend().characterId == 'pico-playable';

    ...

    /* #343 */ if(playPicoIntro && cutsceneTimerManager != null) cutsceneTimerManager.update(event.elapsed);

Steps to reproduce (or crash logs, errors, etc.)

Play a Pico Mix song on the PhillyTrainErect stage.
Play any BF Mix song on the same PhillyTrainErect stage.

FunkinCrew / Funkin