Drupal 10: Reverse Proxy Settings For Cloudflare

$settings['reverse_proxy'] = TRUE;
$settings['reverse_proxy_addresses'] = [$_SERVER['REMOTE_ADDR']];
$settings['reverse_proxy_trusted_headers'] = \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_FOR | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_HOST | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_PORT | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_PROTO;

These reverse_proxy_* settings were introduced in Drupal 8.7.

See https://www.drupal.org/node/3030558 for more detail.