Profile should not be shown in drupal_core plugin

Just to be clear, the "flaw" here is actually in core -- the current profile is always included in the output of ModuleExtensionList. See https://git.drupalcode.org/project/drupal/-/blob/11.x/core/lib/Drupal/Co... for where that happens.

Probably the correct solution here is for the plugin to inject the install_profile container parameter and, if it's set (it might not be, since profiles are uninstallable now), actively remove it from the found projects.

Could use review; I did a bit of clean-up in the code while I was at it. Will also need a test.

That looks great! A couple of minor points.

Fixed PHPCS and switched back to the Testing profile, we don't need to use Standard for this.

someone filed this a long time ago and closed with CNR - glad we found it again and fixed it

Automatically closed - issue fixed for 2 weeks with no activity.