Basically a copy of #372, but happens when the token has the wrong format, (too short/long/doesn't start with "dapi", etc).

Steps to reproduce

Supply any gibberish access token to databricks.sql.connect, that does not fit the expected token format
and try to establish a connection.

sql.connect(
     server_hostname=my_workspace_url,
     http_path=http_path_to_my_warehouse,
     access_token="random-text"
)

Current behavior

The call gets stuck in a long retrying loop, eventually failing with a RequestError, which does not indicate an authentication error.

Expected behavior

The function immediately raises an exception indicating an authentication error.