Provide more info for the AuthenticationError

The Node.js client throws an error when an authentication problem occurs:

```
node:internal/process/promises:391
  triggerUncaughtException(err, true /* fromPromise */);
  ^
[Error: Failed to create producer: AuthenticationError]
```

However, this error message lacks useful details. For example, it does not specify if the issue is related to the network connection to the issuer (for OAuth2), a file not being found, or another cause. It would be better to provide more specific information for this error.

Start by reproducing the shown Node.js AuthenticationError and tracing where that error is created or surfaced in the client. Check how OAuth2 network failures, missing files, and other authentication causes are currently represented. Done means the error message provides useful, specific information about the underlying cause.

Written by the indexing model from the issue text.