fix: Feature flags are not be stored on account creation (#10387)

when creating an account via the platform API the feature flags do not get stored

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/controllers/platform/api/v1/accounts_controller.rb

@@ -4,6 +4,7 @@ class Platform::Api::V1::AccountsController < PlatformController
   def create
     @resource = Account.create!(account_params)
     update_resource_features
+    @resource.save!
     @platform_app.platform_app_permissibles.find_or_create_by(permissible: @resource)
   end