createScheduledHandler(cron: WorkersCron): ScheduledHandler
Builds the handler an application exports as scheduled.
Takes the WorkersCron directly rather than the application,
unlike createQueueHandler. That asymmetry follows from a decision rather
than an oversight: WorkersCron deliberately does not claim
CAPABILITIES.SCHEDULER (see its module doc), so it is not in the registry
to resolve — and it needs neither an id source nor a clock, so the
application can construct it directly.
cron: WorkersCron
The registry carrying the handlers
The handler to assign to the Worker's scheduled export