Dont load Review if Comment is CommentTypeReviewRequest (#28551) (#29160)

Backport #28551

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

(cherry picked from commit 0ac3186267b717bce7076ef44f883df7720d7a2d)

models/issues/review.go

@@ -622,6 +622,9 @@ 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()
 }