Use URI instead of URL for related origins about webauthn

[timcappalli]

This was a conscious design choice for this feature (only web applications), as that is what the WebAuthn specification defines. Web Authentication is a Web Platform API and does not actively define App Platform capabilities or behaviors.

Each app platform implements its own web origin to app identity binding, they've been in production for many years, and most of the time it used for more than just FIDO2/WebAuthn.

[opotonniee]

Noted, although I think it would provide a more consistent solution across clients. New client types would not have to define their own binding. And all related applications would be listed in a single place, whatever their type (web, Android, iOS, or others).

Thanks for the quick feedback.