### Elasticsearch Version

main

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

all

### Problem Description

When you configure an `aggregate_metric_double` with `ignore_malformed: true` and send a malformed value we create an `_ignored` field with three values, `field.value_count`, `field.min`, and `field.max`. This is the only top "composite" field that creates `_ignored` values for its children. Things like shape only create `field` in `_ignored`. Is there a good reason for `aggregate_metric_double` to be different?

### Steps to Reproduce

see above

### Logs (if relevant)

_No response_
x-pack/plugin/mapper-aggregate-metric/src/main/java/org/elasticsearch/xpack/aggregatemetric/mapper/AggregateDoubleMetricFieldMapper.java
@Override
            public boolean advanceToDoc(int docId) throws IOException {
                
                
                
                
                metricHasValue.clear();
                for (Map.Entry<Metric, SortedNumericDocValues> e : metricDocValues.entrySet()) {
                    if (e.getValue().advanceExact(docId)) {
                        metricHasValue.add(e.getKey());
                    }
                }
                return metricHasValue.isEmpty() == false;
            }
        }
    }
}