### Description

For a query with params like `"params": [{"x": 1}, {"y": 2}]` running in a JVM with assertions disabled results in:

```
  "error": {
    "root_cause": [
      {
        "type": "x_content_parse_exception",
        "reason": "Failed to build [params] after last required field arrived"
      }
    ],
    "type": "x_content_parse_exception",
    "reason": "[3:19] [esql/query] failed to parse field [params]",
    "caused_by": {
      "type": "x_content_parse_exception",
      "reason": "Failed to build [params] after last required field arrived",
      "caused_by": {
        "type": "array_index_out_of_bounds_exception",
        "reason": "Index 1 out of bounds for length 0"
      }
    }
  }
```

but with assertions enabled:

```
[2023-09-07T13:03:21,434][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [runTask-0] fatal error in thread [Thread-2], exiting java.lang.AssertionError: [params] must configure at least one constructor argument. If it doesn't have any it should use ObjectParser instead of ConstructingObjectParser. This is a bug in the parser declaration.
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ConstructingObjectParser$Target.finish(ConstructingObjectParser.java:543)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ConstructingObjectParser.parse(ConstructingObjectParser.java:166)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ConstructingObjectParser.apply(ConstructingObjectParser.java:158)
┬╗      at org.elasticsearch.xpack.esql.action.EsqlQueryRequest.parseParams(EsqlQueryRequest.java:181)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.AbstractObjectParser.lambda$declareField$0(AbstractObjectParser.java:174)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.lambda$declareField$10(ObjectParser.java:431)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.parseValue(ObjectParser.java:609)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.parseArray(ObjectParser.java:604)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.parseSub(ObjectParser.java:643)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.parse(ObjectParser.java:315)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.parse(ObjectParser.java:259)
┬╗      at org.elasticsearch.xcontent@8.11.0-SNAPSHOT/org.elasticsearch.xcontent.ObjectParser.apply(ObjectParser.java:382)
┬╗      at org.elasticsearch.xpack.esql.action.EsqlQueryRequest.fromXContent(EsqlQueryRequest.java:144)
┬╗      at org.elasticsearch.xpack.esql.action.RestEsqlQueryAction.prepareRequest(RestEsqlQueryAction.java:45)
```
x-pack/plugin/esql/qa/server/src/main/java/org/elasticsearch/xpack/esql/qa/rest/RestEsqlTestCase.java
assertThat(EntityUtils.toString(response.getEntity(), StandardCharsets.UTF_8), equalTo("{\"errors\":false}"));
        RequestObjectBuilder builder = new RequestObjectBuilder().query(fromIndex() + " | stats min(value)");
        Map<String, Object> result = runEsql(builder.build());
        assertMap(
            result,
            matchesMap().entry("values", List.of(List.of(1))).entry("columns", List.of(Map.of("name", "min(value)", "type", "long")))
        );
        builder = new RequestObjectBuilder().query(fromIndex() + " | stats min(value) by group");
        result = runEsql(builder.build());
        assertMap(
            result,
            matchesMap().entry("values", List.of(List.of(2, 0), List.of(1, 1)))
                .entry("columns", List.of(Map.of("name", "min(value)", "type", "long"), Map.of("name", "group", "type", "long")))
        );
    }
    public void testColumnarMode() throws IOException {
        int docCount = randomIntBetween(3, 10);
        bulkLoadTestData(docCount);
        boolean columnar = randomBoolean();
        var query = builder().query(fromIndex() + " | keep keyword, integer");
        if (columnar || randomBoolean()) {
            query.columnar(columnar);
        }
        Map<String, Object> answer = runEsql(query.build());
        Map<String, String> colKeyword = Map.of("name", "keyword", "type", "keyword");
        Map<String, String> colInteger = Map.of("name", "integer", "type", "integer");
        assertEquals(List.of(colKeyword, colInteger), answer.get("columns"));
        if (columnar) {
            List<String> valKeyword = new ArrayList<>();
            List<Integer> valInteger = new ArrayList<>();