This looks to have just started failing in our release builds on the 15th. This is normally due to feature flags and some capability toggled off when in release mode.

**Build scan:**
https://gradle-enterprise.elastic.co/s/ffnazi2aagnz6/tests/:modules:data-streams:test/org.elasticsearch.datastreams.action.GetDataStreamsResponseTests/testResponseIlmAndDataStreamLifecycleRepresentation


**Reproduction line:**
```
./gradlew ':modules:data-streams:test' --tests "org.elasticsearch.datastreams.action.GetDataStreamsResponseTests.testResponseIlmAndDataStreamLifecycleRepresentation" -Dtests.seed=9284F1971381D42F -Dbuild.snapshot=false -Dtests.jvm.argline="-Dbuild.snapshot=false" -Dtests.locale=sr-Latn-ME -Dtests.timezone=Etc/GMT+2 -Druntime.java=21
```

**Applicable branches:**
main

**Reproduces locally?:**
Yes

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.datastreams.action.GetDataStreamsResponseTests&tests.test=testResponseIlmAndDataStreamLifecycleRepresentation


**Failure excerpt:**
```
java.lang.NullPointerException: Cannot invoke "java.util.List.get(int)" because "failureStoresRepresentation" is null

  at __randomizedtesting.SeedInfo.seed([9284F1971381D42F:AE19FC0FE8A3DFC8]:0)
  at org.elasticsearch.datastreams.action.GetDataStreamsResponseTests.testResponseIlmAndDataStreamLifecycleRepresentation(GetDataStreamsResponseTests.java:170)
  at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
  at java.lang.reflect.Method.invoke(Method.java:580)
  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:48)
  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:1583)

```
modules/data-streams/src/test/java/org/elasticsearch/datastreams/action/GetDataStreamsResponseTests.java
new DataStreamLifecycle(null, null, false),
                true,
                failureStores
            );
            String ilmPolicyName = "rollover-30days";
            Map<Index, Response.IndexProperties> indexSettingsValues = Map.of(
                firstGenerationIndex,
                new Response.IndexProperties(true, ilmPolicyName, ManagedBy.ILM),
                secondGenerationIndex,
                new Response.IndexProperties(true, ilmPolicyName, ManagedBy.ILM),
                writeIndex,
                new Response.IndexProperties(false, null, ManagedBy.UNMANAGED),
                failureStoreIndex,
                new Response.IndexProperties(false, null, ManagedBy.UNMANAGED)
            );
            Response.DataStreamInfo dataStreamInfo = new Response.DataStreamInfo(
                logs,
                ClusterHealthStatus.GREEN,
                "index-template",
                null,
                null,
                indexSettingsValues,
                false
            );
            Response response = new Response(List.of(dataStreamInfo));
            XContentBuilder contentBuilder = XContentFactory.jsonBuilder();
            response.toXContent(contentBuilder, ToXContent.EMPTY_PARAMS);
            BytesReference bytes = BytesReference.bytes(contentBuilder);
            try (XContentParser parser = createParser(JsonXContent.jsonXContent, bytes)) {
                Map<String, Object> map = parser.map();