chore: Make behaviour clear about returning in finally block

samcli/local/apigw/local_apigw_service.py

@@ -718,6 +718,11 @@ def _request_handler(self, **kwargs):
                 LOG.error("Lambda authorizer failed to invoke successfully: %s", str(lambda_authorizer_exception))
 
             if auth_service_error:
+                # Return the Flask service error if there is one, since these are the only exceptions
+                # we are anticipating from the authorizer, anything else indicates a local issue.
+                #
+                # Note that returning within a finally block will have the effect of swallowing
+                # any reraised exceptions.
                 return auth_service_error
 
         endpoint_service_error = None