feat(Banner): Use CloseButton

mentioned in commit 0bc92e39

mentioned in merge request gitlab-org/frontend/pajamas-adoption-scanner!133 (merged)

mentioned in merge request status-page!759 (merged)

mentioned in merge request gitlab!117429 (merged)

mentioned in merge request gitlab-docs!3775 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!3353 (merged)

mentioned in merge request gitlab!118512 (merged)