Fix `Chewy::UndefinedUpdateStrategy` in `dev:populate_sample_data` task when Elasticsearch is enabled (#35615)

lib/tasks/dev.rake

@@ -3,6 +3,7 @@
 namespace :dev do
   desc 'Populate database with test data. Can be run multiple times. Should not be run in production environments'
   task populate_sample_data: :environment do
+    Chewy.strategy(:mastodon) do
       # Create a valid account to showcase multiple post types
       showcase_account = Account.create_with(username: 'showcase_account').find_or_create_by!(id: 10_000_000)
       showcase_user = User.create_with(
@@ -419,4 +420,5 @@ namespace :dev do
         state: :accepted
       ).find_or_create_by!(id: 10_000_012)
     end
+  end
 end