Interface injection of GameProfile fails (with Switchy Proxy)

[sisby-folk]

Describe the bug

When running switchy proxy 1.5.7, chat fails because instanceof SwitchyProxyProfile (an injected interface) returns false for player gameprofiles.

Steps to reproduce

1. Inject an interface into GameProfile (this will of course be remap = false) - here's GameProfileMixin from switchy proxy.
2. Test that interface is being implemented by a gameprofile instance using instanceof with a logger.
3. Logger returns false.

Logs

https://mclo.gs/tcFdskf

Additional context

In the log, i'm printing the following:

SwitchyProxy.LOGGER.info("Interfaces: {} {}", player instanceof SwitchyPlayer, player.getGameProfile() instanceof SwitchyProxyProfile);

The connector compatible version of styled chat is 2.2.3, which isn't released yet - if this can't be reproduced with a different gameprofile interface injection, let me know and i can provide copies.

[Su5eD]

Right, authlib, this is gonna be a bit of a problem. The issue here is that only GAME layer libraries can be mixed into on Forge. I suspect authlib is placed on the BOOT layer, which means mixins targetting its classes will never run. I ran into the same problem in FFAPI, where one of Fabric's mixins was targetting a codec class, and could not be ported over to Forge.

The best solution I can think of would be moving these libraries to the GAME layer, but that is outside of Connector's control. I suppose I could talk to Neo about it though.