Parses a JWT ID and verifies date, issuer & audience. Used this valve when acting as an OIDC RP.
Parameters found in the id token is stored in the first item found. If an item is not present one will be created.
- expected_issuer parameter must be present and match the "issuer" in the token.
- client_id parameter must be present and match the "aud" in the token.
- Will create an item in the flow with a random id if no item exists.