### 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
this.metricFieldMappers = metricFieldMappers;
        this.metricType = builder.timeSeriesMetric.getValue();
        this.indexCreatedVersion = builder.indexCreatedVersion;
    }
    @Override
    public boolean ignoreMalformed() {
        return ignoreMalformed;
    }
    Metric defaultMetric() {
        return defaultMetric;
    }
    @Override
    public AggregateDoubleMetricFieldType fieldType() {
        return (AggregateDoubleMetricFieldType) super.fieldType();
    }
    @Override
    protected String contentType() {
        return CONTENT_TYPE;
    }
    @Override
    public Iterator<Mapper> iterator() {
        return Collections.emptyIterator();
    }
    @Override
    protected void parseCreateField(DocumentParserContext context) throws IOException {
        context.path().add(simpleName());
        XContentParser.Token token;
        XContentSubParser subParser = null;
        EnumSet<Metric> metricsParsed = EnumSet.noneOf(Metric.class);
        Number max = null, min = null;