Use PostConstruct/PreDestroy for ApplicationScoped bean (instead of Observer)

The LRA implementation needs to observe application shutdown in order to perform clean up activities. It achieves this using an ApplicationScoped bean. But when the destroyed event is fired a new bean may be created which is not what we want with an application scoped bean (this behaviour is seen when running as a Quarkus app). Annotating the method with `@PreDestroy` will ensure the correct application scoped bean used. So instead of

void disableRecovery(@Observes @Destroyed(ApplicationScoped.class) Object ignore)

use

    @PreDestroy
    void disableRecovery()