Avoid Double Encoding

[joel]

This PR is more of a question because I can't figure out how you make it work.

When creating a challenge, you call the controller action

Started POST "/passkeys/challenge"

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For a registration BeginChallenge, call BeginRegistration.

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The WebAuthn::PublicKeyCredential::Options creates the challenge:

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and that challenge is returned encoded:

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So why do re-encode it?

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Removing the double encoding makes it work for me. I can provide a Rails 8 app example.

[joel]

The app (Really rough scaffold)

[feralbob]

Hrm... I don't know why it's currently double encoded. I had it working on my test app just fine in this state. Are you saying that it doesn't work if you don't remove the double encoding.

I'll have a look at your example and see if I can replicate.

[joel]

Are you saying it doesn't work if you don't remove the double encoding?

That is precisely what I'm saying
thank you for having a look