auth Flow Redirection Uri
OpenID4VCI authorization-code redirect URI.
Must match the redirect_uri registered with the issuer and an intent-filter in the host app's manifest, otherwise the browser cannot hand the authorization response back to the wallet.
Defaults to "openid-credential-offer" (the e-Boks / offer-flow value). For the Norwegian eIDAS sandbox use "eu.europa.ec.euidi://authorization".