Can't access/turn off shields for sites installed as apps (like photopea.com)

Description of the issue:
Can’t access/turn off shields for sites installed as apps (like photopea.com)

How can this issue be reproduced?

  1. Install a site as an app like at photopea.com (menu → more/install Photopea).
  2. Launch it from desktop (make it executable if not)
  3. Try to access Brave Shields

Expected result:
Access Brave Shields eg. from a DevTools command (if there is already one, sorry, I could not find it)

Brave Version( check About Brave):
V1.26.74

Additional Information:
You can access a site-s settings through clicking on the app’s settings / App Info, but for Photopea no matter if you whitelist / set ads = allowed it will till nag you with a pop-up, while if you set shields down running it from its site, it will stop showing pop-ups.