here we expect message to have clusterMsgLight header
https://github.com/valkey-io/valkey/blob/unstable/src/cluster_legacy.c#L3627

but we use this chunk as if it has clusterMsg
https://github.com/valkey-io/valkey/blob/unstable/src/cluster_legacy.c#L3622
and print sender field that is not present in clusterMsgLight. As a result we see part of our pubsub channel names in logs instead of node names. And it looks like if messages are small enough then out-of-bounds read is possible