Crash when client time is wrong

[RubenVerborgh]

When the client has the wrong time, depending on the difference, CSS and ESS) will send an error response. See for instance CommunitySolidServer/CommunitySolidServer#1012

solid-client-authn-js does not handle such error responses properly.

To reproduce:

• Create a pod at https://pod.playground.solidlab.be/idp/register/
• Set your computer time in the past or the future
• Try to sign on to any app using solid-client-authn-js
• The server will send {"error":"invalid_dpop_proof","error_description":"invalid DPoP key binding"}
• The client will crash

[NSeydoux]

Thanks for reporting this! I'll look into it.