Stimulus - pass the error from response if available in webauthn:attestation:failure event

[FluffyDiscord]

Description

We get error message from backend if signup fails for any reason and we can listen to the webauthn:attestation:failure event that Stimulus controller dispatches.

The issue is, that we don't have any details in this event, no response message, or status code, or error message, so we cannot tell the user what is wrong, except showing a generic error message.

Example

No response

[Spomky]

Indeed, this event is missing details.

[github-actions]

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