Exclude Rabbit Stream when testing RabbitAutoConfiguration

The stream auto-configuration is tested in RabbitStreamConfigurationTests,
and excluding it prevents the creation of the "rabbitStreamEnvironment"
Environment bean, which delays the application context close by 1 second
because it has to wait for some Netty resources to gracefully shut down.

Closes gh-38750

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/amqp/RabbitAutoConfigurationTests.java

@@ -58,6 +58,7 @@ import org.springframework.amqp.rabbit.retry.MessageRecoverer;
 import org.springframework.amqp.support.converter.MessageConverter;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.FilteredClassLoader;
 import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.boot.test.system.CapturedOutput;
@@ -104,7 +105,8 @@ import static org.mockito.Mockito.mock;
 class RabbitAutoConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
-		.withConfiguration(AutoConfigurations.of(RabbitAutoConfiguration.class));
+		.withConfiguration(AutoConfigurations.of(RabbitAutoConfiguration.class))
+		.withClassLoader(new FilteredClassLoader("org.springframework.rabbit.stream")); // gh-38750
 
 	@Test
 	void testDefaultRabbitConfiguration() {