### Elasticsearch Version

main

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

Darwin

### Problem Description

Sorting fails sometimes with the error

```
No TopN sorting encoder for type UNSUPPORTED
```


### Steps to Reproduce

Playing with ES|QL I tried to run the following query

`from logstash-* | sort extension.keyword`

This returns the error

```
No TopN sorting encoder for type UNSUPPORTED
```

If I run the query:

`from logstash-*  | keep extension.keyword | sort extension.keyword`

the data return successfully.

### Logs (if relevant)

_No response_
x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/lucene/ValueSources.java
if (fieldType.isStored()) {
            IndexFieldData<?> fieldData = new StoredFieldSortedBinaryIndexFieldData(
                fieldType.name(),
                CoreValuesSourceType.KEYWORD,
                TextValueSource.TextDocValuesFieldWrapper::new
            ) {
                @Override
                protected BytesRef storedToBytesRef(Object stored) {
                    return new BytesRef((String) stored);
                }
            };
            return new TextValueSource(fieldData);
        }
        FieldDataContext fieldDataContext = new FieldDataContext(
            ctx.getFullyQualifiedIndex().getName(),
            () -> ctx.lookup().forkAndTrackFieldReferences(fieldType.name()),
            ctx::sourcePath,
            MappedFieldType.FielddataOperation.SEARCH
        );
        IndexFieldData<?> fieldData = new SourceValueFetcherSortedBinaryIndexFieldData.Builder(
            fieldType.name(),
            CoreValuesSourceType.KEYWORD,
            SourceValueFetcher.toString(fieldDataContext.sourcePathsLookup().apply(fieldType.name())),
            fieldDataContext.lookupSupplier().get(),
            TextValueSource.TextDocValuesFieldWrapper::new
        ).build(null, null); 
        return new TextValueSource(fieldData);
    }
}