Resolve issue when trying to transfer a Geyser player (#4673)

core/src/main/java/org/geysermc/geyser/session/GeyserSession.java

@@ -896,6 +896,9 @@ public class GeyserSession implements GeyserConnection, GeyserCommandSource {
             this.downstream.getSession().setFlag(BuiltinFlags.ATTEMPT_SRV_RESOLVE, resolveSrv);
         }
 
+        // Disable automatic creation of a new TcpClientSession when transferring - we don't use that functionality.
+        this.downstream.getSession().setFlag(MinecraftConstants.FOLLOW_TRANSFERS, false);
+
         if (geyser.getConfig().getRemote().isUseProxyProtocol()) {
             downstream.setFlag(BuiltinFlags.ENABLE_CLIENT_PROXY_PROTOCOL, true);
             downstream.setFlag(BuiltinFlags.CLIENT_PROXIED_ADDRESS, upstream.getAddress());

gradle/libs.versions.toml

@@ -15,7 +15,7 @@ protocol-connection = "3.0.0.Beta1-20240411.165033-128"
 raknet = "1.0.0.CR3-20240416.144209-1"
 blockstateupdater="1.20.80-20240411.142413-1"
 mcauthlib = "e5b0bcc"
-mcprotocollib = "42ea4a4" # Revert from jitpack after release
+mcprotocollib = "a1b559d" # Revert from jitpack after release
 adventure = "4.14.0"
 adventure-platform = "4.3.0"
 junit = "5.9.2"