Track accurate total hits in CloseIndexIT

The test was not using the TRACK_TOTAL_HITS_ACCURATE and thus
encountered a different issue tracked in #37907. In the meanwhile
we can adapt the test to not fail anymore.

Closes #37897

Author: tlrx

server/src/test/java/org/elasticsearch/indices/state/CloseIndexIT.java

@@ -41,6 +41,7 @@
 import static java.util.Collections.emptySet;
 import static java.util.stream.Collectors.toList;
 import static org.elasticsearch.action.support.IndicesOptions.lenientExpandOpen;
+import static org.elasticsearch.search.internal.SearchContext.TRACK_TOTAL_HITS_ACCURATE;
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertHitCount;
 import static org.hamcrest.Matchers.containsString;
@@ -188,7 +189,7 @@ public void testCloseWhileIndexingDocuments() throws Exception {
 
         assertIndexIsClosed(indexName);
         assertAcked(client().admin().indices().prepareOpen(indexName));
-        assertHitCount(client().prepareSearch(indexName).setSize(0).setTrackTotalHitsUpTo(MAX_DOCS).get(), nbDocs);
+        assertHitCount(client().prepareSearch(indexName).setSize(0).setTrackTotalHitsUpTo(TRACK_TOTAL_HITS_ACCURATE).get(), nbDocs);
     }
 
     public void testCloseWhileDeletingIndices() throws Exception {
@@ -301,7 +302,7 @@ public void testConcurrentClosesAndOpens() throws Exception {
         }
         refresh(indexName);
         assertIndexIsOpened(indexName);
-        assertHitCount(client().prepareSearch(indexName).setSize(0).setTrackTotalHitsUpTo(MAX_DOCS).get(),
+        assertHitCount(client().prepareSearch(indexName).setSize(0).setTrackTotalHitsUpTo(TRACK_TOTAL_HITS_ACCURATE).get(),
             indexer.totalIndexedDocs());
     }