LEGAL_API: 5xx return masking Auth and other Errors

[thorwolpert]

Describe the bug
A 5xx error is being returned by the server, instead of a 4xx error

The correct error is generated (as seen in the log):
flask_jwt_oidc.exceptions.AuthError: ({'code': 'authorization_header_missing', 'description': 'Authorization header is expected'}, 401)

But the error handler that ensure messages are sent to Sentry is then swallowing this error and message and raising a new 5xx error that is returned to the caller.

The error handler should be changed to re-raise the error if it is appropriate to deliver the caller, or if it is truly an unhandled exception, log to sentry and return a 5xx.

To Reproduce
Steps to reproduce the behavior:
curl https://{host-env}/api/v1/businesses/CP0000088/filings?some junk

Expected behavior
valid response or a 401