Frame busting for web views

Usage of WebViews for web logins in mobile apps are not recommended due to security and usability reasons documented in RFC8252. Google has done the same for Google Sign-in in 2021.

Frame busting is for mobile app RPs/clients who are still using web views and not moved to in-app browsers yet. As the OIDC provider for RPs, NDI core will also start supporting in-app browsers and will soon discontinue the support for the web views.