loading a world with fastload, makes the game stuck in screen mode

[fayer3]

Fastload replaces the Level loading screen with it's own, which stays active during gamplay, which messes with our screen open detection.

https://github.com/BumbleSoftware/Fastload/blob/Fabric-universal/src/main/java/io/github/bumblesoftware/fastload/client/BuildingTerrainScreen.java

https://modrinth.com/mod/fastload