Keyless commands throw NoSuchElementException on the cluster replica path

Expected behavior

A keyless command sent to a replica runs on an arbitrary replica.

Actual behavior

ClusterConnectionProvider.getReplicaConnection(CommandArguments) calls getKeyHashSlots().iterator().next() without checking the set is non-empty, so it throws before acquiring a connection:

java.util.NoSuchElementException
  at ClusterConnectionProvider.getReplicaConnection(ClusterConnectionProvider.java:145)
  at ReplicaOnlyConnectionResolver.resolve(ReplicaOnlyConnectionResolver.java:24)

getConnection(CommandArguments) has the same line. executeCommand is unaffected: keyless commands use RoundRobinConnectionResolver.

Steps to reproduce

1. Call JedisCluster.executeCommandToReplica with a keyless command such as PING.

Jedis version: master, 8.1.0-SNAPSHOT. Java 17.