### CI Link

https://gradle-enterprise.elastic.co/s/tegpafzuufyby/tests/:x-pack:plugin:profiler:internalClusterTest/org.elasticsearch.xpack.profiler.GetProfilingActionIT/testAutomaticCancellation?page=eyJvdXRwdXQiOnsiMCI6Mn19

### Repro line

`gradlew ':x-pack:plugin:profiler:internalClusterTest' --tests "org.elasticsearch.xpack.profiler.GetProfilingActionIT.testAutomaticCancellation" -Dtests.seed=95B19E104BBCD69A -Dtests.locale=uk-UA -Dtests.timezone=Pacific/Rarotonga -Druntime.java=19`

### Does it reproduce?

No

### Applicable branches

main

### Failure history

https://gradle-enterprise.elastic.co/scans/tests?search.timeZoneId=Europe/Berlin&tests.container=org.elasticsearch.xpack.profiler.GetProfilingActionIT&tests.test=testAutomaticCancellation

### Failure excerpt

```
java.lang.NullPointerException: Cannot invoke "java.util.Collection.iterator()" because "taskIds" is null	
	at __randomizedtesting.SeedInfo.seed([95B19E104BBCD69A:D213EB75FDBA1AD8]:0)	
	at org.elasticsearch.xpack.profiler.GetProfilingActionIT.lambda$ensureTasksAreCancelled$0(GetProfilingActionIT.java:230)	
	at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1100)	
	at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1085)	
	at org.elasticsearch.xpack.profiler.GetProfilingActionIT.ensureTasksAreCancelled(GetProfilingActionIT.java:229)	
	at org.elasticsearch.xpack.profiler.GetProfilingActionIT.verifyCancellation(GetProfilingActionIT.java:192)	
	at org.elasticsearch.xpack.profiler.GetProfilingActionIT.testAutomaticCancellation(GetProfilingActionIT.java:179)	
	at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)	
	at java.lang.reflect.Method.invoke(Method.java:578)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)	
	at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)	
	at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)	
	at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)	
	at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)	
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)	
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)	
	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)	
	at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)	
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)	
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)	
	at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)	
	at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)	
	at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)	
	at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)	
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)	
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)	
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)	
	at java.lang.Thread.run(Thread.java:1589)	
```	
x-pack/plugin/profiler/src/internalClusterTest/java/org/elasticsearch/xpack/profiler/GetProfilingActionIT.java
import org.apache.http.entity.StringEntity;
import org.apache.logging.log4j.LogManager;
import org.apache.lucene.util.SetOnce;
import org.elasticsearch.action.admin.cluster.node.info.NodeInfo;
import org.elasticsearch.action.admin.cluster.node.info.NodesInfoResponse;
import org.elasticsearch.action.admin.cluster.node.tasks.list.ListTasksResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.support.PlainActionFuture;
import org.elasticsearch.client.Cancellable;
import org.elasticsearch.client.Request;
import org.elasticsearch.client.Response;
import org.elasticsearch.common.network.NetworkModule;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.plugins.PluginsService;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.script.MockScriptPlugin;
import org.elasticsearch.search.lookup.LeafStoredFieldsLookup;
import org.elasticsearch.tasks.CancellableTask;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.tasks.TaskId;
import org.elasticsearch.tasks.TaskInfo;
import org.elasticsearch.tasks.TaskManager;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.transport.TransportService;
import org.elasticsearch.transport.netty4.Netty4Plugin;
import org.elasticsearch.xcontent.XContentType;
import org.junit.Before;
import java.io.IOException;
import java.nio.charset.StandardCharsets;