Defaulted async_filtering to on

ee/app/controllers/groups/roadmap_controller.rb

@@ -9,7 +9,7 @@ module Groups
     before_action :persist_roadmap_layout, only: [:show]
     before_action do
       push_frontend_feature_flag(:roadmap_buffered_rendering, @group)
-      push_frontend_feature_flag(:async_filtering, @group)
+      push_frontend_feature_flag(:async_filtering, @group, default_enabled: true)
     end
 
     feature_category :roadmaps

ee/app/views/groups/roadmap/show.html.haml

@@ -13,7 +13,7 @@
 - has_filters_applied = params[:label_name].present? || params[:author_username].present? || params[:search].present?
 
 - if @epics_count != 0
-  - if !Feature.enabled?(:async_filtering, @group)
+  - if !Feature.enabled?(:async_filtering, @group, default_enabled: true)
     = render 'shared/epic/search_bar', type: :epics, show_roadmap_presets: true, hide_extra_sort_options: true
 
   #js-roadmap{ data: { epics_path: group_epics_path(@group, format: :json),

ee/config/feature_flags/development/async_filtering.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/243781
 milestone: '13.3'
 type: development
 group: group::product planning
-default_enabled: false
+default_enabled: true