[REALMS-8482] I get kicked out of a Java realm for many different issues

I sometimes may be playing without problems for half an hour, or maybe I get kicked out the moment I spawn. Many different errors show up.

Some of them involve:

internal exception io.netty.handler.codec.decoderexception

java.util.zip.dataformatexception incorrect header

Linked issues

Duplicate of REALMS-1656.

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We're tracking this issue in REALMS-1656, so this ticket is being resolved and linked as a duplicate.

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