Add feedback link to summarized comments

What does this MR do and why?

Add feedback link to summarized comments

Screenshots or screen recordings

Before	After

How to set up and validate locally

• Set up AI feature flags (I think :summarize_notes, :summarize_comments are the specific two for this feature)
• Go to issue > view summary (top right of activity feed)
• Feedback issue should appear at bottom of summary

#411677 (closed)