stable theme has been removed from core

I think I have a similar Issue which might fit into this one:
When I update drupal/zurb_foundation from 6 to 9, composer is downloading the "stable" theme into themes/contributed.
But it´s not deleting core/themes/stable in my case.

this is from the composer installed theme:

# Information added by Drupal.org packaging script on 2022-09-13
version: '2.0.0'
project: 'stable'
datestamp: 1663102969

The composer.json from zurb_foundation has this part:

"require": {
    "drupal/stable": "^2.0"
  }

and composer installs themes into the themes dir.
Installer path section of the root composer:

"docroot/themes/contrib/{$name}": [
                "type:drupal-theme"
            ],

We should be save by removing the stable theme source from themes/contrib. I try that.
Yep, its working. My site looks fine, my css begins like that:

@charset "UTF-8";
/**
 * Foundation for Sites
 * Version 6.7.4
 * https://get.foundation
 * Licensed under MIT Open Source
 */

The old one was version 6.5.3 (btw: 6.7.5 would be nice)

And as always: thx for this wonderful theme.
Best,
Lars Jendrzejewski