Dont load Review if Comment is CommentTypeReviewRequest (#28551)

RequestReview get deleted on review.
So we don't have to try to load them on comments.

broken out #28544

models/issues/review.go

@@ -621,6 +621,9 @@ func AddReviewRequest(ctx context.Context, issue *Issue, reviewer, doer *user_mo
 		return nil, err
 	}
 
+	// func caller use the created comment to retrieve created review too.
+	comment.Review = review
+
 	return comment, committer.Commit()
 }