### 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_
test/framework/src/main/java/org/elasticsearch/index/mapper/MapperTestCase.java
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentHelper;
import org.elasticsearch.core.CheckedConsumer;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.FieldDataContext;
import org.elasticsearch.index.fielddata.IndexFieldDataCache;
import org.elasticsearch.index.fieldvisitor.LeafStoredFieldLoader;
import org.elasticsearch.index.fieldvisitor.StoredFieldLoader;
import org.elasticsearch.index.query.SearchExecutionContext;
import org.elasticsearch.index.termvectors.TermVectorsService;
import org.elasticsearch.indices.breaker.NoneCircuitBreakerService;
import org.elasticsearch.script.Script;
import org.elasticsearch.script.ScriptContext;
import org.elasticsearch.script.ScriptFactory;
import org.elasticsearch.script.field.DocValuesScriptFieldFactory;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.lookup.LeafStoredFieldsLookup;
import org.elasticsearch.search.lookup.SearchLookup;
import org.elasticsearch.search.lookup.SourceLookup;
import org.elasticsearch.xcontent.ToXContent;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.json.JsonXContent;
import org.hamcrest.Matcher;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;