fix: catch and raise unauth exceptions in all paths to trigger refresh.

[chrisdoehring]

This pull request improves error handling for authentication failures when interacting with the Ctrack Crystal API. Specifically, it adds explicit handling for unauthorized and forbidden exceptions, ensuring that authentication errors are logged with clear messages and that action activity is recorded appropriately.

Authentication error handling improvements:

• Added specific exception handling for UnauthorizedException and ForbiddenException in _fetch_this_vehicle, logging the error, recording an action activity with error details, and re-raising the exception.
• Added similar exception handling in _do_fetch, logging authentication failures, recording an action activity, and returning a result indicating no observations were extracted.