The test to confirm if Authorization headers can be used and recognized by WordPress needs to include a username and password combination that WordPress can compare against during the testing phase. The inclusion of credentials here would unfortunately also invalidate any existing basic auth session for the site, for example if the user had added this as an extra layer of security on their back-end.
This test is now skipped if the `wp_is_site_protected_by_basic_auth()` function detects that basic auth is being used, since the act of using basic auth to access the site confirms that this feature is working as expected in the first place.
Props WebDragon, TimothyBlynJacobs, costdev.
Fixes#52642.
Built from https://develop.svn.wordpress.org/trunk@51057
git-svn-id: http://core.svn.wordpress.org/trunk@50666 1a063a9b-81f0-0310-95a4-ce76da25c4cd
