Changes to Verify Webauthn sign-up

the response property session/user/metadata became nullable for the status 200

added the new otp-too-many-attempts enum value to the error response property for the response status default

added the new user-already-exists enum value to the error response property for the response status default

removed the email-already-in-use enum value from the error response property for the response status default

added the new optional request property codeChallenge

the session/user/locale response property's maxLength was increased from 2 to 3 for the response status 200

the options/locale request property's maxLength was increased from 2 to 3

added the new provider-account-already-linked enum value to the error response property for the response status default

the options/locale request property's maxLength was decreased to 2

removed the request property codeChallenge

added the new email-already-in-use enum value to the error response property for the response status default

removed the otp-too-many-attempts enum value from the error response property for the response status default

removed the provider-account-already-linked enum value from the error response property for the response status default

removed the user-already-exists enum value from the error response property for the response status default