Faulty check for successful article deletion

[dlh01]

Description of the bug

When performing a DELETE request using \Apple_Push_API\Request\Request::request(), the response is considered successful if the $response variable is null:

apple-news/includes/apple-push-api/request/class-request.php

Lines 414 to 415 in 6eedc79

	// NULL is a valid response for DELETE.
	if ( 'DELETE' === $verb && is_null( $response ) ) {

However, $response contains the return value from wp_safe_remote_request(), which, as far as I can tell, returns array|WP_Error and never null.

Steps To Reproduce

Perform a DELETE request using the request() method. Using XDebug or a similar debugger, observe that even a successful request does not return at the current check for null.

Additional Information

The Apple News developer documentation says that a successful DELETE request will return a 204 No Content. I wonder whether the current check was written as if $response contained the raw response body, which would indeed be empty on success.