feat(css): Add overflow-x and underline:hover utility classes

mentioned in commit 47f35731

mentioned in merge request status-page!592 (merged)

mentioned in merge request gitlab!93864 (merged)

mentioned in merge request gitlab!95273 (closed)

mentioned in merge request gitlab-docs!3023 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!3011 (merged)

mentioned in merge request gitlab-org/frontend/pajamas-adoption-scanner!87 (merged)