chore: add max packet length

Author: Timongcraft

proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/ServerboundPlayerLoadedPacket.java

@@ -35,6 +35,11 @@ public void decode(ByteBuf buf, ProtocolUtils.Direction direction, ProtocolVersi
   @Override
   public void encode(ByteBuf buf, ProtocolUtils.Direction direction, ProtocolVersion version) {}
 
+  @Override
+  public int decodeExpectedMaxLength(ByteBuf buf, ProtocolUtils.Direction direction, ProtocolVersion version) {
+    return 0;
+  }
+
   @Override
   public boolean handle(MinecraftSessionHandler handler) {
     return handler.handle(this);