Fix for ProcessAnnotatedTypes observer with generics

[Jonathan Gallimore]

Hi

I've been trying to use SmallRye Reactive Messaging with OpenWebBeans in
TomEE, and running into an issue that this observer is not fired in the
extension:
https://github.com/smallrye/smallrye-reactive-messaging/blob/4.28.0/smallrye-reactive-messaging-provider/src/main/java/io/smallrye/reactive/messaging/providers/extension/ReactiveMessagingExtension.java#L53-L57

    <T extends EmitterFactory<?>> void processEmitterFactories(
            @Observes @WithAnnotations({ EmitterFactoryFor.class })
ProcessAnnotatedType<T> event) {
        AnnotatedType<?> annotatedType = event.getAnnotatedType();
        emitterFactoryBeans.add(new EmitterFactoryBean<>(annotatedType));
    }

The issue seems to be that generics used mean that the method isn't matched
to the EmitterFactory classes.

I have managed to make a small PR:
https://github.com/apache/openwebbeans/pull/129 that makes this work, and I
have added some additional tests, including a case that is similar to the
above.

Could this be considered for inclusion? I'm happy to do any rework
necessary.

Many thanks

Jon