Filters the recipient of the data request confirmation notification.

In a Multisite environment, this will default to the email address of the
network admin because, by default, single site admins do not have the
capabilities required to process requests. Some networks may wish to
delegate those capabilities to a single-site admin, or a dedicated person
responsible for managing privacy requests.

$admin_email = apply_filters( 'user_request_confirmed_email_to', get_site_option( 'admin_email' ), $request );