BeanManager.getEvent().fire() should be adding @Default qualifier

Currently we are not adding @Default qualifier to events fired via BM#getEvent() when there is no other explicit qualifier (other than @Any present. This seems to be against specification although there are no explicit TCKs asserting this.

Note that an event fire via @Inject Event<X> will have @Default added as expected.

After fixing this, we should expand the TCKs to cover it as well.