Set data_consistency to sticky for AuditEventStreamingWorker

What does this MR do and why?

This MR proposes the use of delayed (setting to sticky after some discussion) data consistency for the AuditEvents::AuditEventStreamingWorker. From our logs, this worker does not perform any database writes which means it could potentially read from the replicas and retry if there is replication lag.

See gitlab-com/gl-infra/scalability#1811 (comment 1326928627)

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