### 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_
server/src/main/java/org/elasticsearch/index/mapper/NumberFieldMapper.java
import org.elasticsearch.script.field.LongDocValuesField;
import org.elasticsearch.script.field.ShortDocValuesField;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.support.TimeSeriesValuesSourceType;
import org.elasticsearch.search.aggregations.support.ValuesSourceType;
import org.elasticsearch.search.lookup.FieldValues;
import org.elasticsearch.search.lookup.SearchLookup;
import org.elasticsearch.search.lookup.SourceLookup;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;
import org.elasticsearch.xcontent.XContentParser.Token;
import java.io.IOException;
import java.time.ZoneId;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.function.BiFunction;
import java.util.function.Function;
public class NumberFieldMapper extends FieldMapper {
    public static final Setting<Boolean> COERCE_SETTING = Setting.boolSetting("index.mapping.coerce", true, Property.IndexScope);
    private static NumberFieldMapper toType(FieldMapper in) {
        return (NumberFieldMapper) in;
    }
    private static final Version MINIMUM_COMPATIBILITY_VERSION = Version.fromString("5.0.0");
    public static class Builder extends FieldMapper.Builder {