Investigate ProcessCommitWorker deduplicate strategy

ProcessCommitWorker has a deduplicate strategy, with a feature flag (deduplicate_process_commit_worker) that does not exist in production. The worker is not being deduplicated. The team should investigate whether deduplication is wanted and update the worker

This ticket was created from INC-2176 and was automatically exported by incident.io 🔥

Update the rollout issue with details on how to monitor the effect of deduplicating this worker