Enable state change logging for optimize_issuable_non_archived_scope

Abdul Wadoodrequested to merge
583045-use-log_state_changes into master

What does this MR do and why?

Add log_state_changes option to track feature flag state in request logs.

References

https://docs.gitlab.com/development/feature_flags/#logging

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #583045 (closed)

Merge request reports