Development.php flags carried over to staging

I set define('JETPACK_DEV_DEBUG', true); in my config/environments/development.php to put my local Jetpack installation into development mode, but after deploying to my staging stage Jetpack is still in development mode.

Should I be placing that flag in a different file or is something off with my config?

I still had WP_ENV=development in my staging stage’s .env file!