Resolve "Adjust AIAction prompt to be more sentiment of review base"

What does this MR do and why?

Improve the 'review merge request' prompt to be more sentimental and provide different information.

Examples of new results:

I have reviewed the merge request and left 7 comments, consisting of 4 questions and 3 recommendations. The review covered topics such as the choice of after_create_commit, the generation of summaries, and the use of sidekiq workers. Overall, I estimate there is a small amount of work required to address these comments.

In this merge request, I left 7 comments: 4 recommendations and 3 questions. The review covered topics such as the use of after_create_commit, the need for a check, and the use of perform_async. Overall, I estimate there is a small amount of work required to address these comments.

I have reviewed the merge request and left a total of 7 comments. 4 of these comments were recommendations and 3 were questions. The review covered topics such as the choice of after_create_commit, the need for a check to summarize diff based on non-`HEAD` diff, and the use of `perform_async`. I estimate there is a small amount of work required to address these comments.

Related to #411921 (closed)