[BUG] Test SegmentReplicationIT.testReplicaAlreadyAtCheckpoint is flaky

[mch2]

Describe the bug

From https://build.ci.opensearch.org/job/gradle-check/37929/testReport/junit/org.opensearch.indices.replication/SegmentReplicationIT/testReplicaAlreadyAtCheckpoint/

java.lang.IllegalStateException: Some shards are still open after the threadpool terminated. Something is leaking index readers or store references.
	at __randomizedtesting.SeedInfo.seed([776E1C21CC3D36FF:CEFFDF69ECCD0FF6]:0)
	at org.opensearch.node.Node.awaitClose(Node.java:1740)
	at org.opensearch.test.InternalTestCluster$NodeAndClient.close(InternalTestCluster.java:1130)
	at org.opensearch.common.util.io.IOUtils.close(IOUtils.java:89)
	at org.opensearch.common.util.io.IOUtils.close(IOUtils.java:131)
	at org.opensearch.common.util.io.IOUtils.close(IOUtils.java:114)
	at org.opensearch.test.InternalTestCluster.close(InternalTestCluster.java:967)
	at org.opensearch.test.OpenSearchTestClusterRule.afterInternal(OpenSearchTestClusterRule.java:325)
	at org.opensearch.test.OpenSearchTestClusterRule.after(OpenSearchTestClusterRule.java:188)
	at org.opensearch.test.OpenSearchTestClusterRule$1.evaluate(OpenSearchTestClusterRule.java:374)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:48)
	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$1.evaluate(TestRuleMarkFailure.java:44)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
	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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Related component

Indexing:Replication

To Reproduce

REPRODUCE WITH: ./gradlew ':server:internalClusterTest' --tests "org.opensearch.indices.replication.SegmentReplicationIT.testReplicaAlreadyAtCheckpoint" -Dtests.seed=776E1C21CC3D36FF -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=da -Dtests.timezone=NZ -Druntime.java=21
NOTE: leaving temporary files on disk at: /var/jenkins/workspace/gradle-check/search/server/build/testrun/internalClusterTest/temp/org.opensearch.indices.replication.SegmentReplicationIT_776E1C21CC3D36FF-001

Expected behavior

test to pass

Additional Details

Plugins
Please list all plugins currently enabled.

Screenshots
If applicable, add screenshots to help explain your problem.

Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[mch2]

Will take a look at this

[reta]

Closing in favour of #14328