[Bug] Shadow topics and topics that have shadow topics cannot be deleted cleanly

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Read release policy

- [X] I understand that unsupported versions don't get bug fixes. I will attempt to reproduce the issue on a supported version of Pulsar client and Pulsar broker.

### Version

Pulsar version: master 15b88d2

### Minimal reproduce step

Add the following tests to `ShadowTopicRealBkTest`

```java
public void test() throws Exception {
final var sourceTopic = TopicName.get("test-read-from-source").toString();
final var shadowTopic = sourceTopic + "-shadow";

admin.topics().createNonPartitionedTopic(sourceTopic);
admin.topics().createShadowTopic(shadowTopic, sourceTopic);
admin.topics().setShadowTopics(sourceTopic, Lists.newArrayList(shadowTopic));

Awaitility.await().atMost(5, TimeUnit.SECONDS).untilAsserted(()->{
final var sourcePersistentTopic = (PersistentTopic) pulsar.getBrokerService()
.getTopicIfExists(sourceTopic).get().orElseThrow();
final var replicator = (ShadowReplicator) sourcePersistentTopic.getShadowReplicators().get(shadowTopic);
Assert.assertNotNull(replicator);
Assert.assertEquals(String.valueOf(replicator.getState()), "Started");
});
admin.topics().delete(shadowTopic);
admin.topics().delete(sourceTopic);
}
```

### What did you expect to see?

The tests passed

### What did you see instead?

The tests failed because of the shadow replicators have producers and readers registered to the shadow topic and the source topic.

```
org.apache.pulsar.client.admin.PulsarAdminException$PreconditionFailedException: Topic has 1 connected producers/consumers
```

### Anything else?

Even if we delete these topics by force, the shadow replicator will not be cleared correctly.

### Are you willing to submit a PR?

- [X] I'm willing to submit a PR!