### 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/enrich/EnrichLookupService.java
private final String sessionId;
        private final ShardId shardId;
        private final String matchType;
        private final String matchField;
        private final Page inputPage;
        private final List<NamedExpression> extractFields;
        LookupRequest(
            String sessionId,
            ShardId shardId,
            String matchType,
            String matchField,
            Page inputPage,
            List<NamedExpression> extractFields
        ) {
            this.sessionId = sessionId;
            this.shardId = shardId;
            this.matchType = matchType;
            this.matchField = matchField;
            this.inputPage = inputPage;
            this.extractFields = extractFields;
        }
        LookupRequest(StreamInput in) throws IOException {
            super(in);
            this.sessionId = in.readString();