Merge branch '53640-follow-up-from-resolve-redesign-activity-feed' into 'master'

Resolve "Follow-up from "Resolve "Redesign activity feed"""

Closes #53640

See merge request gitlab-org/gitlab-ce!22899

app/assets/javascripts/vue_shared/components/icon.vue

 <script>
 // only allow classes in images.scss e.g. s12
-const validSizes = [8, 10, 12, 16, 18, 24, 32, 48, 72];
+const validSizes = [8, 10, 12, 14, 16, 18, 24, 32, 48, 72];
 let iconValidator = () => true;
 /*

changelogs/unreleased/53640-follow-up-from-resolve-redesign-activity-feed.yml

+title: Adds new icon size to Vue icon component
+merge_request: 22899
+author:
+type: other