Changing entity worker requeue to 5s

What does this MR do and why?

Changing the PERFORM_DELAY delay back to 5 seconds.

This is due to the increased delay impacting e2e specs significantly #430811 (comment 1636003427)

Because this worker has

deduplicate :until_executed, if_deduplicated: :reschedule_once

even if it was re-queued before it finishes, it should be rescheduled nonetheless.

Relates to: #429606 (closed)

Screenshots or screen recordings

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