Display buttons to easily access groups

fixes https://gitlab.ruhr-uni-bochum.de/FDM/rdm-system/antleaf-projectmanagement/-/issues/472

hyrax/app/controllers/hyrax/dashboard_controller.rb

@@ -19,14 +19,14 @@ module Hyrax
     self.sidebar_partials = { activity: [], configuration: [], repository_content: [], tasks: [] }
 
     def show
-      collections_to_display = list_collections_to_display
+      @collections_to_display = list_collections_to_display
       if can? :read, :admin_dashboard
         @presenter = Hyrax::Admin::DashboardPresenter.new
         @admin_set_rows = Hyrax::AdminSetService.new(self).search_results_with_work_count(:read)
-        render 'show_admin', locals: {collections_to_display: collections_to_display}
+        render 'show_admin'
       else
         @presenter = Dashboard::UserPresenter.new(current_user, view_context, params[:since])
-        render 'show_user', locals: {collections_to_display: collections_to_display}
+        render 'show_user'
       end
     end