Flaky-test: TransactionBufferCloseTest.deleteTopicCloseTransactionBufferTest

### Search before asking

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

### Example failure

https://github.com/apache/pulsar/actions/runs/5401760645/jobs/9812478081?pr=20671#step:10:913

### Exception stacktrace

```
Error: Tests run: 14, Failures: 1, Errors: 0, Skipped: 13, Time elapsed: 52.953 s <<< FAILURE! - in org.apache.pulsar.broker.transaction.buffer.TransactionBufferCloseTest
Error: org.apache.pulsar.broker.transaction.buffer.TransactionBufferCloseTest.deleteTopicCloseTransactionBufferTest[true](3) Time elapsed: 10.058 s <<< FAILURE!
org.testng.internal.thread.ThreadTimeoutException: Method org.apache.pulsar.broker.transaction.buffer.TransactionBufferCloseTest.deleteTopicCloseTransactionBufferTest() didn't finish within the time-out 10000
at java.base@17.0.7/jdk.internal.misc.Unsafe.park(Native Method)
at java.base@17.0.7/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
at java.base@17.0.7/java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1866)
at java.base@17.0.7/java.util.concurrent.ForkJoinPool.unmanagedBlock(ForkJoinPool.java:3463)
at java.base@17.0.7/java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3434)
at java.base@17.0.7/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1939)
at java.base@17.0.7/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2095)
at app//org.apache.pulsar.client.admin.internal.BaseResource.sync(BaseResource.java:342)
at app//org.apache.pulsar.client.admin.internal.TopicsImpl.deletePartitionedTopic(TopicsImpl.java:457)
at app//org.apache.pulsar.client.admin.Topics.deletePartitionedTopic(Topics.java:802)
at app//org.apache.pulsar.broker.transaction.buffer.TransactionBufferCloseTest.deleteTopic(TransactionBufferCloseTest.java:81)
at app//org.apache.pulsar.broker.transaction.buffer.TransactionBufferCloseTest.deleteTopicCloseTransactionBufferTest(TransactionBufferCloseTest.java:72)
at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base@17.0.7/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base@17.0.7/java.lang.reflect.Method.invoke(Method.java:568)
at app//org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:139)
at app//org.testng.internal.invokers.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:47)
at app//org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:76)
at app//org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:11)
at java.base@17.0.7/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base@17.0.7/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base@17.0.7/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
```

### Are you willing to submit a PR?

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

Start with TransactionBufferCloseTest.deleteTopicCloseTransactionBufferTest and its deleteTopic helper at TransactionBufferCloseTest.java:72 and :81. Run the failing test and inspect the timeout path through TopicsImpl.deletePartitionedTopic and BaseResource.sync. Done means the test no longer intermittently exceeds its timeout and passes reliably.

Written by the indexing model from the issue text.