(chore): feature flags for new activity front#2511

Core/Features/Provider.php

@@ -45,6 +45,9 @@ class Provider extends DiProvider
                 'cdn-jwt',
                 'post-scheduler',
                 'navigation',
+                'activity-v2--single-page',
+                'activity-v2--feeds',
+                'activity-v2--boosts',
             ];
         });