[webauthn] Should enterprise attestation support be flagged explicitly? (#1742)

nsatragno has just created a new issue for https://github.com/w3c/webauthn:

== Should enterprise attestation support be flagged explicitly? ==
At the June F2F, the topic of how painful it can be to require enterprise attestation came up. Right now browsers throw a type error if not supported, but that would turn into a request with no attestation after updating browsers to ignore unknown enum values. This is undesirable: RPs might want to know in advance whether enterprise attestation can succeed or not.

Please view or discuss this issue at https://github.com/w3c/webauthn/issues/1742 using your GitHub account


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