**Build scan:**
https://gradle-enterprise.elastic.co/s/wjstsypdoyez6/tests/:x-pack:plugin:shutdown:qa:multi-node:javaRestTest/org.elasticsearch.xpack.shutdown.NodeShutdownIT/testShutdownReadinessService

**Reproduction line:**
```
./gradlew ':x-pack:plugin:shutdown:qa:multi-node:javaRestTest' --tests "org.elasticsearch.xpack.shutdown.NodeShutdownIT.testShutdownReadinessService" -Dtests.seed=E1262674CB60A393 -Dtests.locale=ar-MA -Dtests.timezone=America/Kralendijk -Druntime.java=17 -Dtests.fips.enabled=true
```

**Applicable branches:**
main

**Reproduces locally?:**
No

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.shutdown.NodeShutdownIT&tests.test=testShutdownReadinessService

**Failure excerpt:**
```
junit.framework.AssertionFailedError: Expected exception IOException but no exception was thrown

  at __randomizedtesting.SeedInfo.seed([E1262674CB60A393:2C6B3F0E690FF71B]:0)
  at org.apache.lucene.tests.util.LuceneTestCase.expectThrows(LuceneTestCase.java:2854)
  at org.apache.lucene.tests.util.LuceneTestCase.expectThrows(LuceneTestCase.java:2840)
  at org.elasticsearch.test.readiness.ReadinessClientProbe.lambda$tcpReadinessProbeFalse$2(ReadinessClientProbe.java:73)
  at java.security.AccessController.doPrivileged(AccessController.java:318)
  at org.elasticsearch.test.readiness.ReadinessClientProbe.tcpReadinessProbeFalse(ReadinessClientProbe.java:72)
  at org.elasticsearch.xpack.shutdown.NodeShutdownIT.testShutdownReadinessService(NodeShutdownIT.java:133)
  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: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:833)

```
test/framework/src/main/java/org/elasticsearch/readiness/MockReadinessService.java
/**
     * Marker plugin used by {@link MockNode} to enable {@link MockReadinessService}.
     */
    public static class TestPlugin extends Plugin {}
    private static final int RETRIES = 3;
    private static final int RETRY_DELAY_IN_MILLIS = 10;
    private static final String METHOD_NOT_MOCKED = "This method has not been mocked";
    private static class MockServerSocketChannel extends ServerSocketChannel {
        static ServerSocketChannel openMock() {
            return new MockServerSocketChannel();
        }
        private MockServerSocketChannel() {
            super(SelectorProvider.provider());
        }
        @Override
        public ServerSocketChannel bind(SocketAddress local, int backlog) {
            assert isOpen();