Follow-up: Fix Cop offenses for WorkerDataConsistency

See #334495 (closed)

This fixes all offenses ignored in !65341 (merged)

Semantically this is a no-op; setting data_consistency to :always had been the default previously. We are merely making this explicit in code, so as to encourage teams to always consider this setting during development.

More about worker data consistency here: https://docs.gitlab.com/ee/development/sidekiq_style_guide.html#job-data-consistency-strategies