Fix hidden group icons on mobile profile page

Group icons on profile pages were being hidden for screens < 576px

app/views/shared/groups/_group.html.haml

@@ -16,7 +16,7 @@
 
   .avatar-container.rect-avatar.s40
     = link_to group do
-      = group_icon(group, class: "avatar s40 d-none d-sm-block")
+      = group_icon(group, class: "avatar s40")
   .title
     = link_to group.full_name, group, class: 'group-name'
 

changelogs/unreleased/29371-group-icon-missing-on-small-viewports-on-profile-page.yml

+---
+title: Fix missing group icons on profile page when screen < 576px
+merge_request: 28973
+author:
+type: fixed