### Elasticsearch Version

main

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

all

### Problem Description

Do this

### Steps to Reproduce

```
rm /tmp/evil
for a in {0..9}; do
   for b in {0..9}; do
      echo '{"index": {}}' >> /tmp/evil
      echo '{"a": '$a', "b": '$b'}' >> /tmp/evil
   done
done
echo >> /tmp/evil

curl -uelastic:password -XDELETE localhost:9200/test
curl -HContent-Type:application/json -uelastic:password -XPUT localhost:9200/test
curl -HContent-Type:application/json -uelastic:password -XPOST localhost:9200/test/_bulk --data-binary @/tmp/evil
curl -HContent-Type:application/json -uelastic:password -XPOST localhost:9200/test/_forcemerge?max_num_segments=1
curl -HContent-Type:application/json -uelastic:password -XPOST localhost:9200/test/_refresh

curl -HContent-Type:application/json -uelastic:password -XPOST localhost:9200/_esql?pretty -d'{
   "query": "FROM test | STATS MAX(a) BY a, b | KEEP a"
}'
```

### Logs (if relevant)

_No response_
x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/planner/LocalExecutionPlanner.java
if (dataType == DataTypes.NULL) {
            return ElementType.NULL;
        }
        if (dataType == DataTypes.BOOLEAN) {
            return ElementType.BOOLEAN;
        }
        if (dataType == EsQueryExec.DOC_DATA_TYPE) {
            return ElementType.DOC;
        }
        throw EsqlIllegalArgumentException.illegalDataType(dataType);
    }
    private PhysicalOperation planOutput(OutputExec outputExec, LocalExecutionPlannerContext context) {
        PhysicalOperation source = plan(outputExec.child(), context);
        var output = outputExec.output();
        return source.withSink(
            new OutputOperatorFactory(
                Expressions.names(output),
                alignPageToAttributes(output, source.layout),
                outputExec.getPageConsumer()
            ),
            source.layout
        );
    }
    private static Function<Page, Page> alignPageToAttributes(List<Attribute> attrs, Layout layout) {
        
        
        
        final int[] mappedPosition = new int[attrs.size()];
        int index = -1;
        boolean transformRequired = false;