[13.x] Add JobReleased event to Worker

[jackbayliss]

This PR adds a JobReleased event that is dispatched when a job releases itself back onto the queue from within its own handler.

We have a JobReleasedAfterException event, but the difference is this event fires when a release happens such as from the middleware ie WithoutOverlapping.. or in job handle in userland when using ->release();

Context is we're freshly using managed queues, due to the graceful shutdown, our jobs can take hours and you can't have just 1 worker on pro, so we end up setting 1 worker min, 2 max, so we need to use WithoutOverlapping as only need one job of a particular type at a time and it would be nice to know when a job gets released, so I figured this would be nice.

Open to renaming it 🫡

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