OpenID Federation client id prefix does not allow ephemeral encryption keys #685
Description
The openid_federation client id prefix mentions:
The client_metadata parameter, if present in the Authorization Request, MUST be ignored when this Client Identifier Prefix is used
This however feels a bit too strict, since it removes the possibility to use ephemeral encryption keys.
Is it intentional that ephemeral encryption keys are not supported for openid_federation client id prefix? Is this something that cannot be changed anymore and should be clarified in profiles?