Handle scenario where compensating transaction returns a failure

[cer]

Current behavor

eventuate-tram-sagas/eventuate-tram-sagas-orchestration-simple-dsl/src/main/java/io/eventuate/tram/sagas/simpledsl/SimpleSagaDefinition.java

Lines 49 to 50 in 17a1a95

	} else if (compensating) {
	throw new UnsupportedOperationException("Failure when compensating");

This breaks reply message handling.

What about happen:

• The saga should transition to a failed state.
• (Possible) the orchestration should tell the participant's command handling logic (via a header) to require a successful response.