Render app container in header partial

app/views/layouts/header/_default.html.haml

@@ -84,5 +84,8 @@
         = sprite_icon('ellipsis_h', size: 12, css_class: 'more-icon js-navbar-toggle-right')
         = sprite_icon('close', size: 12, css_class: 'close-icon js-navbar-toggle-left')
 
+- if ::Feature.enabled?(:whats_new_drawer)
+  #whats-new-app
+
 - if can?(current_user, :update_user_status, current_user)
   .js-set-status-modal-wrapper{ data: { current_emoji: current_user.status.present? ? current_user.status.emoji : '', current_message: current_user.status.present? ? current_user.status.message : '' } }

ee/app/views/layouts/header/_whats_new_dropdown_item.html.haml

 - if ::Feature.enabled?(:whats_new_dropdown)
   - if ::Feature.enabled?(:whats_new_drawer)
     #whats-new-trigger
-
-    - content_for :scripts_body do
-      #whats-new-app
   - else
     %li
       = link_to _("See what's new at GitLab"), "#{promo_url}/releases/gitlab-com/", target: '_blank', rel: 'noopener noreferrer', data: { track_event: 'click_whats_new', track_property: 'question_menu' }