ARTEMIS-4076: handle EventLoop becoming AutoClosable via ExecutorService parent on Java 19, and default method impl causing AllClassesTest to infinite loop

Adds a timeout to the test to prevent similar future issues.

artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/proton/handler/ExecutorNettyAdapter.java

@@ -40,7 +40,7 @@ import org.apache.activemq.artemis.utils.actors.ArtemisExecutor;
  *  TODO: This could be refactored out of the main codebase but at a high cost.
  *        We may do it some day if we find an easy way that won't clutter the code too much.
  *  */
-public class ExecutorNettyAdapter implements EventLoop {
+public class ExecutorNettyAdapter implements EventLoop, AutoCloseable {
 
    final ArtemisExecutor executor;
 
@@ -187,7 +187,7 @@ public class ExecutorNettyAdapter implements EventLoop {
 
    @Override
    public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
-      return false;
+      return true;
    }
 
    @Override
@@ -218,4 +218,9 @@ public class ExecutorNettyAdapter implements EventLoop {
    public void execute(Runnable command) {
       executor.execute(command);
    }
+
+   @Override
+   public void close() {
+     // noop
+   }
 }

tests/unit-tests/src/test/java/org/apache/activemq/artemis/tests/unit/AllClassesTest.java

@@ -80,7 +80,7 @@ public class AllClassesTest {
    }
 
 
-   @Test
+   @Test(timeout = 3000)
    public void testToString() {
       Object targetInstance = null;