Rework the BeanDefiningAnnotationBuildItem default scope

[mkouba]

• it was previously implemented as a "synthetic" stereotype; the
  downsides of this solution were (1) there was a need to distinguish
  "real" and "bda" stereotypes so that the bda one can be ignored if a
  real stereotype with a default scope is used (otherwise users might get
  unexpected definition errors) and (2) it was not possible to define CDI
  qualifier as a bean defining annotation with a default scope

[manovotn]

LGTM

[quarkus-bot]

Failing Jobs - Building 8322420

Status	Name	Step	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 11
✖	JVM Tests - JDK 11 Windows	Set up job	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 17
✔️	JVM Tests - JDK 18

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 Windows #

- Failing: extensions/smallrye-reactive-messaging-amqp/deployment 
! Skipped: integration-tests/reactive-messaging-amqp 

📦 extensions/smallrye-reactive-messaging-amqp/deployment

✖ io.quarkus.smallrye.reactivemessaging.amqp.AnonymousAmqpTest.test line 30 - More details - Source on GitHub

org.awaitility.core.ConditionTimeoutException: Condition with io.quarkus.smallrye.reactivemessaging.amqp.AnonymousAmqpTest was not fulfilled within 1 minutes.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)

✖ io.quarkus.smallrye.reactivemessaging.amqp.devmode.AmqpDevModeTest.testCodeUpdate line 44 - More details - Source on GitHub

org.awaitility.core.ConditionTimeoutException: Condition with io.quarkus.smallrye.reactivemessaging.amqp.devmode.AmqpDevModeTest was not fulfilled within 1 minutes.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)

✖ io.quarkus.smallrye.reactivemessaging.amqp.devmode.nohttp.AmqpDevModeNoHttpTest.testConsumerUpdate line 77 - More details - Source on GitHub

org.awaitility.core.ConditionTimeoutException: 
Assertion condition defined as a io.quarkus.smallrye.reactivemessaging.amqp.devmode.nohttp.AmqpDevModeNoHttpTest 
Expecting size of:

✖ io.quarkus.smallrye.reactivemessaging.amqp.devmode.nohttp.AmqpDevModeNoHttpTest.testProducerUpdate - More details - Source on GitHub

java.util.concurrent.RejectedExecutionException
	at org.jboss.threads.RejectingExecutor.execute(RejectingExecutor.java:38)
	at org.jboss.threads.EnhancedQueueExecutor.rejectShutdown(EnhancedQueueExecutor.java:2076)

✖ io.quarkus.smallrye.reactivemessaging.amqp.SecuredAmqpTest.test line 28 - More details - Source on GitHub

org.awaitility.core.ConditionTimeoutException: Condition with io.quarkus.smallrye.reactivemessaging.amqp.SecuredAmqpTest was not fulfilled within 10 seconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)

[mkouba]

I'm going to merge this PR. The windows CI failure does not seem to be related.