Preview Breaks When Using a Block Outside of Predefined List

[Darkosto]

Hello!

When using the Noise Settings Generator, the preview will break when using a block outside of this list: https://github.com/misode/misode.github.io/blob/97e996191993899a3bc0e858418dd5c062bd20a1/src/app/components/previews/NoiseSettingsPreview.tsx#LL108C7-L108C18

The preview window will go completely gray until that block is removed from the generation:

I believe this happened when PR #322 was merged

Prior to this PR, any block not found on the list would be rendered black.

Thank you!

[misode]

@Darkosto Thank you for spotting this and for the report! It has now been fixed!