Authenticate with a JWT

[rdelhaise-wiiisdom]

We're trying to use a JWT to authenticate to the Metadata API. The documentation says that we can do it: https://help.tableau.com/current/api/metadata_api/en-us/docs/meta_api_auth.html#sign-in-using-a-json-web-token-jwt

Unfortunately, it returns a "BACKILL_RUNNING" error (that is the same as an "Expired token" workflow). We're trying to use it on Tableau Cloud 2023.4.