3 very rare failures in the last 28 days. Wasn't able to get a local reproduction.

**Build scan:**
https://gradle-enterprise.elastic.co/s/em57lkjvl445e/tests/:server:internalClusterTest/org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT/testRestoreWithPersistedFileSettings

**Reproduction line:**
`./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT.testRestoreWithPersistedFileSettings" -Dtests.seed=2D954AF1FE4F15BD -Dtests.locale=vi-VN -Dtests.timezone=Europe/Luxembourg -Druntime.java=17`

**Applicable branches:**
main

**Reproduces locally?:**
No

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT&tests.test=testRestoreWithPersistedFileSettings

**Failure excerpt:**
```
java.lang.IllegalArgumentException: Failed to process request [org.elasticsearch.action.admin.cluster.settings.ClusterUpdateSettingsRequest/unset] with errors: [[indices.recovery.max_bytes_per_sec] set as read-only by [file_settings]]

  at org.elasticsearch.action.support.master.TransportMasterNodeAction.validateForImmutableState(TransportMasterNodeAction.java:196)
  at org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:210)
  at org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:59)
  at org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:86)
  at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:61)
  at org.elasticsearch.tasks.TaskManager.registerAndExecute(TaskManager.java:201)
  at org.elasticsearch.client.internal.node.NodeClient.executeLocally(NodeClient.java:112)
  at org.elasticsearch.client.internal.node.NodeClient.doExecute(NodeClient.java:90)
  at org.elasticsearch.client.internal.support.AbstractClient.execute(AbstractClient.java:380)
  at org.elasticsearch.client.internal.FilterClient.doExecute(FilterClient.java:57)
  at org.elasticsearch.client.internal.support.AbstractClient.execute(AbstractClient.java:380)
  at org.elasticsearch.client.internal.support.AbstractClient.execute(AbstractClient.java:366)
  at org.elasticsearch.client.internal.support.AbstractClient$ClusterAdmin.execute(AbstractClient.java:667)
  at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:34)
  at org.elasticsearch.action.ActionRequestBuilder.get(ActionRequestBuilder.java:48)
  at org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked(ElasticsearchAssertions.java:91)
  at org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked(ElasticsearchAssertions.java:87)
  at org.elasticsearch.reservedstate.service.SnaphotsAndFileSettingsIT.testRestoreWithPersistedFileSettings(SnaphotsAndFileSettingsIT.java:328)
  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)

```
server/src/internalClusterTest/java/org/elasticsearch/reservedstate/service/SnaphotsAndFileSettingsIT.java
).actionGet();
            assertNotNull(clusterStateResponse.getState().metadata().reservedStateMetadata().get(FileSettingsService.NAMESPACE));
            final ClusterGetSettingsAction.Response getSettingsResponse = clusterAdmin().execute(
                ClusterGetSettingsAction.INSTANCE,
                new ClusterGetSettingsAction.Request()
            ).actionGet();
            assertThat(
                getSettingsResponse.persistentSettings().get(InternalClusterInfoService.INTERNAL_CLUSTER_INFO_TIMEOUT_SETTING.getKey()),
                equalTo("25s")
            );
            
            var cleanupReservedState = cleanedClusterStateListener(masterNode);
            logger.info("--> clear the file based settings");
            writeJSONFile(masterNode, emptyFileSettingsJSON);
            assertClusterStateSaveOK(cleanupReservedState.v1(), cleanupReservedState.v2());
        } finally {
            
            assertAcked(
                clusterAdmin().prepareUpdateSettings()
                    .setPersistentSettings(
                        Settings.builder()
                            .put(InternalClusterInfoService.INTERNAL_CLUSTER_INFO_TIMEOUT_SETTING.getKey(), (String) null)
                            .put("indices.recovery.max_bytes_per_sec", (String) null)
                            .build()
                    )
            );
        }
    }
}