change from members using size to start using total_count in the group

members page

CHANGELOG

@@ -7,6 +7,7 @@ v 8.12.0 (unreleased)
 v 8.11.1 (unreleased)
   - Fix file links on project page when default view is Files !5933
+  - Change using size to use count and caching it for number of group members
 v 8.11.0
   - Use test coverage value from the latest successful pipeline in badge. !5862

app/views/groups/group_members/index.html.haml

@@ -17,7 +17,7 @@
     .panel-heading
       %strong #{@group.name}
       group members
-      %span.badge= @members.size
+      %span.badge= @members.total_count
       .controls
         = form_tag group_group_members_path(@group), method: :get, class: 'form-inline member-search-form'  do
           .form-group