Actually failed on a PR branch but the PR didn't touch anything in this area I think.

**Build scan:**
https://gradle-enterprise.elastic.co/s/oof57yigaovuk/tests/:server:internalClusterTest/org.elasticsearch.indices.flush.FlushIT/testFlushOnInactive

**Reproduction line:**
`./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.indices.flush.FlushIT.testFlushOnInactive" -Dtests.seed=38FC56033AE2DC88 -Dtests.locale=en-IN -Dtests.timezone=Europe/Zaporozhye -Druntime.java=17`

**Applicable branches:**
master

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.indices.flush.FlushIT&tests.test=testFlushOnInactive

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: <0>
     but: was <2>

  at __randomizedtesting.SeedInfo.seed([38FC56033AE2DC88:DF99C84AD94DDF44]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.junit.Assert.assertThat(Assert.java:923)
  at org.elasticsearch.indices.flush.FlushIT.lambda$testFlushOnInactive$1(FlushIT.java:145)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1098)
  at org.elasticsearch.indices.flush.FlushIT.testFlushOnInactive(FlushIT.java:143)
  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/index/shard/IndexShard.java
assert getActiveOperationsCount() == OPERATIONS_BLOCKED
                    : "locally resetting without blocking operations, active operations are [" + getActiveOperations() + "]";
            }
            if (writeAllowedStates.contains(state) == false) {
                throw new IllegalIndexShardStateException(
                    shardId,
                    state,
                    "operation only allowed when shard state is one of " + writeAllowedStates + ", origin [" + origin + "]"
                );
            }
        }
    }
    private boolean assertPrimaryMode() {
        assert shardRouting.primary() && replicationTracker.isPrimaryMode()
            : "shard " + shardRouting + " is not a primary shard in primary mode";
        return true;
    }
    private boolean assertReplicationTarget() {
        assert replicationTracker.isPrimaryMode() == false : "shard " + shardRouting + " in primary mode cannot be a replication target";
        return true;
    }
    private void verifyNotClosed() throws IllegalIndexShardStateException {
        verifyNotClosed(null);
    }
    private void verifyNotClosed(Exception suppressed) throws IllegalIndexShardStateException {
        IndexShardState state = this.state; 
        if (state == IndexShardState.CLOSED) {
            final IllegalIndexShardStateException exc = new IndexShardClosedException(shardId, "operation only allowed when not closed");
            if (suppressed != null) {
                exc.addSuppressed(suppressed);