It doesn’t really matter one way or the other, as cache purges are either Everything, or a very specific URL.
The only APO I have is for a subdomain (not www) and it only lists that one hostname.
While it’s quite possible your site runs on both hostnames, it’s unlikely, as WordPress usually steers queries to a specific hostname. Without knowing your hostname, I can’t test this.
@yevgen can probably give this a look and let us know.
I see that WordPress is properly configured and redirects www to the naked domain.
Hopefully yevgen can answer this. Again, it doesn’t really matter one way or another, but I can see how someone could be concerned about APO being configured for the other hostname as well, even though it’s not being used.