OpenIDConnect authentication fail when access token is not a JWT

[xfournet]

Description

InvalidTokenError: Invalid token specified: invalid json for part #2 (Unexpected end of JSON input)

Reproducible Steps

Steps to create the smallest reproducible scenario:

1. Create a SSO integration on OAuth0 by using an OpenIDConnect provider
2. log on the the platform with the provider login button
3. error
4. in provider logs, we see the error above