Add log for possible reason that blocks the waitForCleanups

pulsar-broker/src/main/java/org/apache/pulsar/broker/loadbalance/extensions/channel/ServiceUnitStateChannelImpl.java

@@ -1407,6 +1407,7 @@ private void waitForCleanups(String broker, boolean excludeSystemTopics, int max
 
                 if (data.state() == Owned && broker.equals(data.dstBroker())) {
                     cleaned = false;
+                    log.info("[{}] bundle {} is still owned by this, data: {}", broker, serviceUnit, data);
                     break;
                 }
             }