Move feature flag to EE extension

app/controllers/projects/issues_controller.rb

@@ -46,7 +46,6 @@ class Projects::IssuesController < Projects::ApplicationController
 
   before_action do
     push_frontend_feature_flag(:vue_issuable_sidebar, project.group)
-    push_frontend_feature_flag(:save_issuable_health_status, project.group, default_enabled: true)
   end
 
   before_action only: :show do

ee/app/controllers/ee/projects/issues_controller.rb

@@ -11,6 +11,10 @@ module EE
 
         before_action :check_service_desk_available!, only: [:service_desk]
         before_action :whitelist_query_limiting_ee, only: [:update]
+
+        before_action do
+          push_frontend_feature_flag(:save_issuable_health_status, project.group, default_enabled: true)
+        end
       end
 
       override :issue_except_actions

spec/features/issues/issue_sidebar_spec.rb

@@ -13,7 +13,6 @@ describe 'Issue Sidebar' do
   let!(:xss_label) { create(:label, project: project, title: '<script>alert("xss");</script>') }
 
   before do
-    stub_feature_flags(save_issuable_health_status: false)
     sign_in(user)
   end