Flaky-test: ProxyPublishConsumeClientSideEncryptionTest.testJavaSendAndWssConsumeWithEncryptionAndCompression

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

### Example failures

- [2023-09-25T16:01:34.0345020Z](https://github.com/apache/pulsar/actions/runs/6298840062/job/17107399022#step:10:1518)

### Exception stacktrace

```
org.apache.pulsar.client.admin.PulsarAdminException$PreconditionFailedException: Topic has 1 connected producers/consumers
at org.apache.pulsar.client.admin.PulsarAdminException.wrap(PulsarAdminException.java:252)
at org.apache.pulsar.client.admin.internal.BaseResource.sync(BaseResource.java:352)
at org.apache.pulsar.client.admin.internal.TopicsImpl.delete(TopicsImpl.java:482)
at org.apache.pulsar.client.admin.Topics.delete(Topics.java:892)
at org.apache.pulsar.client.admin.internal.TopicsImpl.delete(TopicsImpl.java:472)
at org.apache.pulsar.websocket.proxy.ProxyPublishConsumeClientSideEncryptionTest.testJavaSendAndWssConsumeWithEncryptionAndCompression(ProxyPublishConsumeClientSideEncryptionTest.java:269)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:139)
at org.testng.internal.invokers.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:47)
at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:76)
at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:11)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Suppressed: org.apache.pulsar.client.admin.PulsarAdminException$PreconditionFailedException: Topic has 1 connected producers/consumers
at org.apache.pulsar.client.admin.internal.BaseResource.getApiException(BaseResource.java:289)
at org.apache.pulsar.client.admin.internal.BaseResource$4.failed(BaseResource.java:237)
at org.glassfish.jersey.client.JerseyInvocation$1.failed(JerseyInvocation.java:882)
at org.glassfish.jersey.client.JerseyInvocation$1.completed(JerseyInvocation.java:863)
at org.glassfish.jersey.client.ClientRuntime.processResponse(ClientRuntime.java:229)
at org.glassfish.jersey.client.ClientRuntime.access$200(ClientRuntime.java:62)
at org.glassfish.jersey.client.ClientRuntime$2.lambda$response$0(ClientRuntime.java:173)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:288)
at org.glassfish.jersey.client.ClientRuntime$2.response(ClientRuntime.java:173)
at org.apache.pulsar.client.admin.internal.http.AsyncHttpConnector.lambda$apply$1(AsyncHttpConnector.java:254)
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
at org.apache.pulsar.client.admin.internal.http.AsyncHttpConnector.lambda$retryOperation$4(AsyncHttpConnector.java:296)
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
at org.asynchttpclient.netty.NettyResponseFuture.loadContent(NettyResponseFuture.java:222)
at org.asynchttpclient.netty.NettyResponseFuture.done(NettyResponseFuture.java:257)
at org.asynchttpclient.netty.handler.AsyncHttpClientHandler.finishUpdate(AsyncHttpClientHandler.java:241)
at org.asynchttpclient.netty.handler.HttpHandler.handleChunk(HttpHandler.java:114)
at org.asynchttpclient.netty.handler.HttpHandler.handleRead(HttpHandler.java:143)
at org.asynchttpclient.netty.handler.AsyncHttpClientHandler.channelRead(AsyncHttpClientHandler.java:78)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
```

Start with ProxyPublishConsumeClientSideEncryptionTest.testJavaSendAndWssConsumeWithEncryptionAndCompression and reproduce the failure around line 269, where topic deletion reports one connected producer or consumer. Trace the test's client and consumer cleanup before deletion. Done means the test reliably completes its cleanup and passes without the connected-client failure.

Written by the indexing model from the issue text.