[fix][test] Fix jvm oom on Unit Test broker group 1 (#16542)

(cherry picked from commit 3752a11)

pulsar-broker/src/test/java/org/apache/pulsar/client/api/MultiTopicsConsumerTest.java

@@ -65,11 +65,17 @@ protected void cleanup() throws Exception {
         super.internalCleanup();
     }
 
-    @Override
-    protected PulsarClient createNewPulsarClient(ClientBuilder clientBuilder) throws PulsarClientException {
-        ClientConfigurationData conf =
-                ((ClientBuilderImpl) clientBuilder).getClientConfigurationData();
-        return new PulsarClientImpl(conf) {
+    // test that reproduces the issue https://github.com/apache/pulsar/issues/12024
+    // where closing the consumer leads to an endless receive loop
+    @Test
+    public void testMultiTopicsConsumerCloses() throws Exception {
+        String topicNameBase = "persistent://my-property/my-ns/my-topic-consumer-closes-";
+
+        ClientConfigurationData conf = ((ClientBuilderImpl) PulsarClient.builder().serviceUrl(lookupUrl.toString()))
+                .getClientConfigurationData();
+
+        @Cleanup
+        PulsarClientImpl client = new PulsarClientImpl(conf) {
             {
                 ScheduledExecutorService internalExecutorService =
                         (ScheduledExecutorService) super.getScheduledExecutorProvider().getExecutor();
@@ -85,31 +91,23 @@ public ExecutorService getInternalExecutorService() {
                 return internalExecutorServiceDelegate;
             }
         };
-    }
-
-    // test that reproduces the issue https://github.com/apache/pulsar/issues/12024
-    // where closing the consumer leads to an endless receive loop
-    @Test
-    public void testMultiTopicsConsumerCloses() throws Exception {
-        String topicNameBase = "persistent://my-property/my-ns/my-topic-consumer-closes-";
-
         @Cleanup
-        Producer<byte[]> producer1 = pulsarClient.newProducer()
+        Producer<byte[]> producer1 = client.newProducer()
                 .topic(topicNameBase + "1")
                 .enableBatching(false)
                 .create();
         @Cleanup
-        Producer<byte[]> producer2 = pulsarClient.newProducer()
+        Producer<byte[]> producer2 = client.newProducer()
                 .topic(topicNameBase + "2")
                 .enableBatching(false)
                 .create();
         @Cleanup
-        Producer<byte[]> producer3 = pulsarClient.newProducer()
+        Producer<byte[]> producer3 = client.newProducer()
                 .topic(topicNameBase + "3")
                 .enableBatching(false)
                 .create();
 
-        Consumer<byte[]> consumer = pulsarClient
+        Consumer<byte[]> consumer = client
                 .newConsumer()
                 .topics(Lists.newArrayList(topicNameBase + "1", topicNameBase + "2", topicNameBase + "3"))
                 .subscriptionInitialPosition(SubscriptionInitialPosition.Earliest)