**Build scan:**
https://gradle-enterprise.elastic.co/s/swrn2vccdizu6/tests/:qa:smoke-test-http:javaRestTest/org.elasticsearch.http.ClusterStateRestCancellationIT/testClusterStateRestCancellation

**Reproduction line:**
`./gradlew ':qa:smoke-test-http:javaRestTest' --tests "org.elasticsearch.http.ClusterStateRestCancellationIT.testClusterStateRestCancellation" -Dtests.seed=2034D67B43AAFEF0 -Dtests.locale=ca -Dtests.timezone=Europe/Madrid -Druntime.java=17`

**Applicable branches:**
main

**Reproduces locally?:**
No

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.http.ClusterStateRestCancellationIT&tests.test=testClusterStateRestCancellation

**Failure excerpt:**
```
java.lang.IllegalStateException: unable to launch a new watch service

  at __randomizedtesting.SeedInfo.seed([2034D67B43AAFEF0:A2A0FB19FD8E07BE]:0)
  at org.elasticsearch.reservedstate.service.FileSettingsService.startWatcher(FileSettingsService.java:271)
  at org.elasticsearch.reservedstate.service.FileSettingsService.startIfMaster(FileSettingsService.java:142)
  at org.elasticsearch.reservedstate.service.FileSettingsService.doStart(FileSettingsService.java:116)
  at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:43)
  at org.elasticsearch.node.Node.start(Node.java:1372)
  at org.elasticsearch.test.InternalTestCluster$NodeAndClient.startNode(InternalTestCluster.java:982)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
  at java.util.concurrent.FutureTask.run(FutureTask.java:264)
  at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:820)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
  at java.lang.Thread.run(Thread.java:833)

  Caused by: java.io.IOException: User limit of inotify watches reached

    at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
    at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:266)
    at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
    at java.lang.Thread.run(Thread.java:833)

```
server/src/test/java/org/elasticsearch/reservedstate/service/FileSettingsServiceTests.java
env = newEnvironment(Settings.EMPTY);
        Files.createDirectories(env.configFile());
        ClusterSettings clusterSettings = new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
        controller = new ReservedClusterStateService(clusterService, List.of(new ReservedClusterSettingsAction(clusterSettings)));
        DiscoveryNode discoveryNode = new DiscoveryNode(
            "_node_id",
            buildNewFakeTransportAddress(),
            emptyMap(),
            emptySet(),
            Version.CURRENT
        );
        nodeInfo = new NodeInfo(
            Version.CURRENT,
            Build.CURRENT,
            discoveryNode,
            Settings.EMPTY,
            null,
            null,
            null,
            null,
            null,
            null,
            null,
            new IngestInfo(Collections.singletonList(new ProcessorInfo("set"))),
            null,
            null
        );
        NodesInfoResponse response = new NodesInfoResponse(new ClusterName("elasticsearch"), List.of(nodeInfo), List.of());
        clusterAdminClient = mock(ClusterAdminClient.class);
        doAnswer(i -> {