StaticSendSend a notification about a scheduled job completion.
Delivery goes through NotificationEngine, which honors the recipient's per-type
preferences and handles email/SMS templating. When the engine cannot deliver at all — the
type is not seeded in this instance, the engine is unavailable — an in-app notification is
written directly, but only if the job asked for in-app; falling back onto a channel the job
did not request would be worse than not delivering.
A recipient who has opted out is not a failure and does not trigger the fallback.
true when at least one channel actually delivered.
Delivers notifications about scheduled job execution.