Update anonymous feedback feature flag

What does this MR do?

Updates feature flag YAML file for anonymous_visual_review_feedback feature flag.

Related to #251080 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• [-] Style guides
• [-] Database guides
• [-] Separation of EE specific content