Is this potentially related to this recent change in that area done in  https://github.com/elastic/elasticsearch/pull/86054 ?

**Build scan:**
https://gradle-enterprise.elastic.co/s/azmukpqpbn4yq/tests/:x-pack:plugin:security:test/org.elasticsearch.xpack.security.authc.ApiKeyServiceTests/testGetApiKeyMetadata

**Reproduction line:**
`./gradlew ':x-pack:plugin:security:test' --tests "org.elasticsearch.xpack.security.authc.ApiKeyServiceTests.testGetApiKeyMetadata" -Dtests.seed=F333870E25DA21A1 -Dtests.locale=zh-Hans-CN -Dtests.timezone=America/Porto_Velho -Druntime.java=17`

**Applicable branches:**
master

**Reproduces locally?:**
Yes

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.security.authc.ApiKeyServiceTests&tests.test=testGetApiKeyMetadata

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: a map with size <0>
     but: map size was <4>

  at __randomizedtesting.SeedInfo.seed([F333870E25DA21A1:141EE9790AB7BA34]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.junit.Assert.assertThat(Assert.java:923)
  at org.elasticsearch.xpack.security.authc.ApiKeyServiceTests.testGetApiKeyMetadata(ApiKeyServiceTests.java:1694)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:568)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:824)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:475)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:831)
  at java.lang.Thread.run(Thread.java:833)

```
x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/ApiKeyServiceTests.java
Arrays.asList(
                ApiKeyService.getOwnersRealmNames(authentication.runAs(AuthenticationTests.randomUser(), lookupRealmRef).token())
            ),
            contains(lookupRealmRef.getName())
        );
        
        lookupRealmRef = AuthenticationTests.randomRealmRef(true);
        assertThat(
            Arrays.asList(ApiKeyService.getOwnersRealmNames(authentication.runAs(AuthenticationTests.randomUser(), lookupRealmRef))),
            containsInAnyOrder(
                lookupRealmRef.getDomain().realms().stream().map(realmIdentifier -> realmIdentifier.getName()).toArray(String[]::new)
            )
        );
        assertThat(
            Arrays.asList(
                ApiKeyService.getOwnersRealmNames(authentication.runAs(AuthenticationTests.randomUser(), lookupRealmRef).token())
            ),
            containsInAnyOrder(
                lookupRealmRef.getDomain().realms().stream().map(realmIdentifier -> realmIdentifier.getName()).toArray(String[]::new)
            )
        );
    }
    public void testAuthWillTerminateIfGetThreadPoolIsSaturated() throws ExecutionException, InterruptedException {
        final String apiKey = randomAlphaOfLength(16);
        final ApiKeyCredentials creds = new ApiKeyCredentials(randomAlphaOfLength(12), new SecureString(apiKey.toCharArray()));
        SecurityMocks.mockGetRequestException(client, new EsRejectedExecutionException("rejected"));
        ApiKeyService service = createApiKeyService(Settings.EMPTY);
        final PlainActionFuture<AuthenticationResult<User>> future = new PlainActionFuture<>();
        service.tryAuthenticate(threadPool.getThreadContext(), creds, future);
        final AuthenticationResult<User> authenticationResult = future.get();