enableRequiredServices asserts the services that exist once per swarm and
are optional -- its own description says so -- and the queue meets that
rule. It was left out because this file predates the swarm-nats container
by nine days and was never revisited, not because anyone decided against
it.
The all-local mode already derives nats.autoGenerateCallout, so it was
minting the queue's callout nkeys and never starting the queue. With this
the mode's loopback derivation for the controller points at something
that is actually running.
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