Setting online-mode to false does not allow offline players to join the server

1. Set online-mode to false in the server properties file.

2. Use a proxy that does not forward auth information (or offline client) to attempt to join BDS

3. BDS will disconnect the player for not being authenticated.

Disconnect log from the proxy:

2025/06/18 18:10:47 ERROR failed to dial server error="dial minecraft 127.0.0.1:39684->127.0.0.1:60000: disconnectionScreen.notAuthenticated"

I confirmed offline-modewas set to false by attempting to enable allow-list at the same time, which resulted in this message:

[2025-06-18 18:21:12:058 ERROR] Using an allowlist but without online authentication can be dangerous and is not allowed.