fix: resolve RqueueListenerAutoConfigTest transport configuration conflict

The test was configuring both redisConnectionFactory and a non-Redis MessageBroker,
which violates the validation in SimpleRqueueListenerContainerFactory that ensures
exactly one transport is configured. Fixed by setting the messageBroker directly
instead of the Redis connection factory when testing with a non-Redis broker.

Assisted-By: Claude Code

Author: sonus21

rqueue-core/src/test/java/com/github/sonus21/rqueue/core/impl/ReactiveRqueueMessageEnqueuerBrokerRoutingTest.java

@@ -25,6 +25,8 @@
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import com.github.sonus21.rqueue.core.spi.Capabilities;
+
 import com.github.sonus21.TestBase;
 import com.github.sonus21.rqueue.CoreUnitTest;
 import com.github.sonus21.rqueue.config.RqueueConfig;
@@ -92,6 +94,7 @@ void init() throws IllegalAccessException {
     FieldUtils.writeField(enqueuer, "rqueueConfig", rqueueConfig, true);
     FieldUtils.writeField(
         enqueuer, "rqueueMessageMetadataService", rqueueMessageMetadataService, true);
+    lenient().when(messageBroker.capabilities()).thenReturn(new Capabilities(true, false, false, true));
     lenient()
         .when(rqueueMessageMetadataService.saveReactive(any(), any(), anyBoolean()))
         .thenReturn(Mono.just(Boolean.TRUE));

rqueue-spring-boot-starter/src/test/java/com/github/sonus21/rqueue/spring/boot/tests/unit/RqueueListenerAutoConfigTest.java

@@ -111,7 +111,7 @@ void rqueueMessageListenerContainer()
       throws IllegalAccessException, ClassNotFoundException, InstantiationException {
     SimpleRqueueListenerContainerFactory factory = new SimpleRqueueListenerContainerFactory();
     factory.setMessageConverterProvider(new DefaultMessageConverterProvider());
-    factory.setRedisConnectionFactory(redisConnectionFactory);
+    factory.setMessageBroker(messageBroker);
     RqueueListenerAutoConfig messageAutoConfig = new RqueueListenerAutoConfig();
     FieldUtils.writeField(
         messageAutoConfig,