Bug Report: Pico Mix instrumental can be selected for Pico Erect

[ActualMandM]

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.)

https://github.com/user-attachments/assets/6548bb5e-cb84-4b4f-94bd-0deda8794ffd

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

1. Go to Freeplay
2. Hover over Pico
3. Change to Erect or Nightmare difficulty
4. Select the song, the instrumental type selection will appear

[EliteMasterEric]

Replicated and resolved internally.