Game crashes if phantom_membrane_block from Unusual End is placed on a sublevel

### Context

https://modrinth.com/mod/unusual_end

<img width="778" height="218" alt="Image" src="https://github.com/user-attachments/assets/bd6660c4-877b-4a73-b140-98db2a2b74e4" />

### Crash Report

https://mclo.gs/OkTLA25