### Elasticsearch Version

8.5.0

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

Linux 9b4c50a443c1 5.15.0-52-generic #58-Ubuntu SMP Thu Oct 13 08:03:55 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

### Problem Description

In 8.5, _nodes/stats returns a failure message if the node has closed indices. In previous versions, it works.
Please see steps to reproduce.

### Steps to Reproduce

```
$ curl -XPUT http://localhost:9200/test_index
$ curl http://localhost:9200/_nodes/stats  # <- it works
$ curl -XPOST http://localhost:9200/test_index/_close
$ curl http://localhost:9200/_nodes/stats
{
  "_nodes": {
    "total": 1,
    "successful": 0,
    "failed": 1,
    "failures": [
      {
        "type": "failed_node_exception",
        "reason": "Failed node [...]",
        "node_id": "...",
        "caused_by": {
          "type": "null_pointer_exception",
          "reason": "Cannot invoke \"org.elasticsearch.index.mapper.MapperService.mappingLookup()\" because the return value of \"org.elasticsearch.index.IndexService.mapperService()\" is null"
        }
      }
    ]
  },
  "cluster_name": "...",
  "nodes": {}
}
```

### Logs (if relevant)

_No response_
server/src/test/java/org/elasticsearch/index/IndexServiceTests.java
import org.elasticsearch.xcontent.XContentType;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import static org.elasticsearch.index.shard.IndexShardTestCase.getEngine;
import static org.elasticsearch.test.InternalSettingsPlugin.TRANSLOG_RETENTION_CHECK_INTERVAL_SETTING;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
import static org.hamcrest.core.IsEqual.equalTo;
public class IndexServiceTests extends ESSingleNodeTestCase {
    @Override
    protected Collection<Class<? extends Plugin>> getPlugins() {
        return Collections.singleton(InternalSettingsPlugin.class);
    }
    public static CompressedXContent filter(QueryBuilder filterBuilder) throws IOException {
        XContentBuilder builder = XContentFactory.jsonBuilder();
        filterBuilder.toXContent(builder, ToXContent.EMPTY_PARAMS);
        builder.close();
        return new CompressedXContent(Strings.toString(builder));
    }
    public void testBaseAsyncTask() throws Exception {
        IndexService indexService = createIndex("test", Settings.EMPTY);
        AtomicReference<CountDownLatch> latch = new AtomicReference<>(new CountDownLatch(1));
        AtomicReference<CountDownLatch> latch2 = new AtomicReference<>(new CountDownLatch(1));
        final AtomicInteger count = new AtomicInteger();
        IndexService.BaseAsyncTask task = new IndexService.BaseAsyncTask(indexService, TimeValue.timeValueMillis(1)) {
            @Override
            protected void runInternal() {