fix(GlLabel): Update `GlLabel` size control type

mentioned in commit f877e661

mentioned in merge request gitlab!90318 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2906 (merged)

mentioned in merge request status-page!545 (merged)

mentioned in merge request gitlab-docs!2841 (merged)

mentioned in merge request status-page!548 (merged)

mentioned in merge request status-page!549 (merged)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!2914 (closed)

mentioned in merge request gitlab-docs!2865 (merged)