Persistent subscriptions are not invoking the FailureHandler

[carlosgoias]

Describe the bug
If you create persistent subscription with the configuration with FailureHandler settings, it's not being called, even using the ThrowOnError = true

To Reproduce
Steps to reproduce the behavior:

private static Task RetryEventProcessingFailureHandler(
		EventStoreClient client,
		PersistentSubscription subscription,
		ResolvedEvent resolvedEvent,
		Exception exception
	)
{
	return subscription.Nack(PersistentSubscriptionNakEventAction.Skip, exception.Message, resolvedEvent);
}
...
services.AddSubscription<AllPersistentSubscription, AllPersistentSubscriptionOptions>(
	"PaymentIntegration",
	builder => builder.Configure(cfg => 
	{
		cfg.FailureHandler = RetryEventProcessingFailureHandler;
		cfg.ThrowOnError = true;
		cfg.EventFilter = StreamFilter.RegularExpression($"^{testId}#");
	}));

Expected behavior
FailureHandler should be called.

Screenshots
I suspect the problem is in this part PersistentSubscriptionBase, the line 198, is if(Options.ThrownOnError) throw exception, and never calling the line 202 with the failureHandler.

Desktop (please complete the following information):
All

Smartphone (please complete the following information):
All

Additional context
Currently using 0.15.0-rc.2