SearchServiceTests.testIsParallelCollectionSupportedForResults fails intermittently

```
12:37:10 org.elasticsearch.search.SearchServiceTests > testIsParallelCollectionSupportedForResults FAILED
12:37:10     java.lang.AssertionError
12:37:10         at __randomizedtesting.SeedInfo.seed([4140C168DE8FB0BB:771A78D5E4B36180]:0)
12:37:10         at org.junit.Assert.fail(Assert.java:86)
12:37:10         at org.junit.Assert.assertTrue(Assert.java:41)
12:37:10         at org.junit.Assert.assertFalse(Assert.java:64)
12:37:10         at org.junit.Assert.assertFalse(Assert.java:74)
12:37:10         at org.elasticsearch.search.SearchServiceTests.testIsParallelCollectionSupportedForResults(SearchServiceTests.java:2096)
```

```
./gradlew ':server:test' --tests "org.elasticsearch.search.SearchServiceTests.testIsParallelCollectionSupportedForResults" -Dtests.seed=4140C168DE8FB0BB -Dtests.locale=es-SV -Dtests.timezone=Africa/Banjul -Druntime.java=20
```
server/src/test/java/org/elasticsearch/search/SearchServiceTests.java
0,
            null
        );
        try (ReaderContext readerContext = createReaderContext(indexService, indexService.getShard(0))) {
            try (
                SearchContext context = getInstanceFromNode(SearchService.class).createContext(
                    readerContext,
                    shardRequest,
                    mock(SearchShardTask.class),
                    ResultsType.QUERY,
                    true
                )
            ) {
                check.accept(context.aggregations().factories().context());
            }
        }
    }
    public void testExpandSearchThrottled() {
        createIndex("throttled_threadpool_index");
        client().execute(
            InternalOrPrivateSettingsPlugin.UpdateInternalOrPrivateAction.INSTANCE,
            new InternalOrPrivateSettingsPlugin.UpdateInternalOrPrivateAction.Request(
                "throttled_threadpool_index",
                IndexSettings.INDEX_SEARCH_THROTTLED.getKey(),
                "true"
            )
        ).actionGet();
        client().prepareIndex("throttled_threadpool_index").setId("1").setSource("field", "value").setRefreshPolicy(IMMEDIATE).get();
        assertHitCount(client().prepareSearch().get(), 1L);
        assertHitCount(client().prepareSearch().setIndicesOptions(IndicesOptions.STRICT_EXPAND_OPEN_FORBID_CLOSED).get(), 1L);