### 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
return; 
        }
        SourceToParse source = source(this::writeField);
        ParsedDocument doc = mapperService.documentMapper().parse(source);
        withLuceneIndex(mapperService, iw -> iw.addDocument(doc.rootDoc()), ir -> {
            LeafReaderContext ctx = ir.leaves().get(0);
            DocValuesScriptFieldFactory docValuesFieldSource = fieldType.fielddataBuilder(FieldDataContext.noRuntimeFields("test"))
                .build(new IndexFieldDataCache.None(), new NoneCircuitBreakerService())
                .load(ctx)
                .getScriptFieldFactory("test");
            docValuesFieldSource.setNextDocId(0);
            DocumentLeafReader reader = new DocumentLeafReader(doc.rootDoc(), Collections.emptyMap());
            DocValuesScriptFieldFactory indexData = fieldType.fielddataBuilder(FieldDataContext.noRuntimeFields("test"))
                .build(new IndexFieldDataCache.None(), new NoneCircuitBreakerService())
                .load(reader.getContext())
                .getScriptFieldFactory("test");
            indexData.setNextDocId(0);
            
            assertThat(docValuesFieldSource.toScriptDocValues(), equalTo(indexData.toScriptDocValues()));
        });
    }
    protected boolean supportsStoredFields() {
        return true;
    }
    protected void minimalStoreMapping(XContentBuilder b) throws IOException {
        minimalMapping(b);
        b.field("store", true);
    }
    /**
     * Checks that loading stored fields for this field produces the same set of values