**Build scan:**
https://gradle-enterprise.elastic.co/s/62tsv7yy2zpi6/tests/:server:internalClusterTest/org.elasticsearch.discovery.StableMasterDisruptionIT/testRepeatedNullMasterRecognizedAsGreenIfMasterDoesNotKnowItIsUnstable

**Reproduction line:**
`./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.discovery.StableMasterDisruptionIT.testRepeatedNullMasterRecognizedAsGreenIfMasterDoesNotKnowItIsUnstable" -Dtests.seed=14526AF887CEB2E0 -Dtests.locale=nl-BE -Dtests.timezone=Asia/Kathmandu -Druntime.java=17`

**Applicable branches:**
master

**Reproduces locally?:**
No

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.discovery.StableMasterDisruptionIT&tests.test=testRepeatedNullMasterRecognizedAsGreenIfMasterDoesNotKnowItIsUnstable

**Failure excerpt:**
```
java.lang.AssertionError: {"status":"red","cluster_name":"TEST-TEST_WORKER_VM=[312]-CLUSTER_SEED=[5352377479593158041]-HASH=[AE5823120D]-cluster","components":{"cluster_coordination":{"status":"red","indicators":{"master_is_stable":{"status":"red","summary":"No master has been observed recently","help_url":"https://ela.st/fix-master","details":{},"impacts":[{"severity":1,"description":"The cluster cannot create, delete, or rebalance indices, and cannot insert or update documents.","impact_areas":["ingest"]},{"severity":1,"description":"Scheduled tasks such as Watcher, ILM, and SLM will not work. The _cat APIs will not work.","impact_areas":["deployment_management"]},{"severity":3,"description":"Snapshot and restore will not work. Searchable snapshots cannot be mounted.","impact_areas":["backup"]}],"user_actions":[{"message":"The Elasticsearch cluster does not have a stable master node. Please contact Elastic Support (https://support.elastic.co) to discuss available options."}]}}},"data":{"status":"unknown","indicators":{"shards_availability":{"status":"unknown","summary":"Could not determine health status. Check details on critical issues preventing the health status from reporting.","details":{"reasons":{"master_is_stable":"red"}}}}},"snapshot":{"status":"unknown","indicators":{"repository_integrity":{"status":"unknown","summary":"Could not determine health status. Check details on critical issues preventing the health status from reporting.","details":{"reasons":{"master_is_stable":"red"}}}}}}}
Expected: <GREEN>
     but: was <RED>

  at __randomizedtesting.SeedInfo.seed([14526AF887CEB2E0:FF799459BC41D329]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.elasticsearch.discovery.StableMasterDisruptionIT.assertMasterStability(StableMasterDisruptionIT.java:126)
  at org.elasticsearch.discovery.StableMasterDisruptionIT.assertGreenMasterStability(StableMasterDisruptionIT.java:119)
  at org.elasticsearch.discovery.StableMasterDisruptionIT.testRepeatedNullMasterRecognizedAsGreenIfMasterDoesNotKnowItIsUnstable(StableMasterDisruptionIT.java:462)
  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)

```
server/src/main/java/org/elasticsearch/common/settings/ClusterSettings.java
import org.elasticsearch.node.NodeRoleSettings;
import org.elasticsearch.persistent.PersistentTasksClusterService;
import org.elasticsearch.persistent.decider.EnableAssignmentDecider;
import org.elasticsearch.plugins.PluginsService;
import org.elasticsearch.readiness.ReadinessService;
import org.elasticsearch.repositories.fs.FsRepository;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.search.SearchModule;
import org.elasticsearch.search.SearchService;
import org.elasticsearch.search.aggregations.MultiBucketConsumerService;
import org.elasticsearch.search.fetch.subphase.highlight.FastVectorHighlighter;
import org.elasticsearch.snapshots.InternalSnapshotsInfoService;
import org.elasticsearch.snapshots.RestoreService;
import org.elasticsearch.snapshots.SnapshotsService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.ProxyConnectionStrategy;
import org.elasticsearch.transport.RemoteClusterService;
import org.elasticsearch.transport.RemoteConnectionStrategy;
import org.elasticsearch.transport.SniffConnectionStrategy;
import org.elasticsearch.transport.TransportSettings;
import org.elasticsearch.watcher.ResourceWatcherService;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.function.Predicate;
/**
 * Encapsulates all valid cluster level settings.
 */
public final class ClusterSettings extends AbstractScopedSettings {