### 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
for (int i = 0; i < docCount; i++) {
                valKeyword.add("keyword" + i);
                valInteger.add(i);
            }
            assertEquals(List.of(valKeyword, valInteger), answer.get("values"));
        } else {
            List<Object> rows = new ArrayList<>();
            for (int i = 0; i < docCount; i++) {
                rows.add(List.of("keyword" + i, i));
            }
            assertEquals(rows, answer.get("values"));
        }
    }
    public void testTextMode() throws IOException {
        int count = randomIntBetween(0, 100);
        bulkLoadTestData(count);
        var builder = builder().query(fromIndex() + " | keep keyword, integer").build();
        assertEquals(expectedTextBody("txt", count, null), runEsqlAsTextWithFormat(builder, "txt", null));
    }
    public void testCSVMode() throws IOException {
        int count = randomIntBetween(0, 100);
        bulkLoadTestData(count);
        var builder = builder().query(fromIndex() + " | keep keyword, integer").build();
        assertEquals(expectedTextBody("csv", count, '|'), runEsqlAsTextWithFormat(builder, "csv", '|'));
    }
    public void testTSVMode() throws IOException {
        int count = randomIntBetween(0, 100);
        bulkLoadTestData(count);
        var builder = builder().query(fromIndex() + " | keep keyword, integer").build();
        assertEquals(expectedTextBody("tsv", count, null), runEsqlAsTextWithFormat(builder, "tsv", null));