### 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
@Override
            SourceLoader.SyntheticFieldLoader syntheticFieldLoader(String fieldName, String fieldSimpleName, boolean ignoreMalformed) {
                return new SortedNumericDocValuesSyntheticFieldLoader(fieldName, fieldSimpleName, ignoreMalformed) {
                    @Override
                    protected void writeValue(XContentBuilder b, long value) throws IOException {
                        b.value(NumericUtils.sortableIntToFloat((int) value));
                    }
                };
            }
        },
        DOUBLE("double", NumericType.DOUBLE) {
            @Override
            public Double parse(Object value, boolean coerce) {
                double parsed = objectToDouble(value);
                validateParsed(parsed);
                return parsed;
            }
            @Override
            public Number parsePoint(byte[] value) {
                return DoublePoint.decodeDimension(value, 0);
            }
            @Override
            public Double parse(XContentParser parser, boolean coerce) throws IOException {
                double parsed = parser.doubleValue(coerce);
                validateParsed(parsed);
                return parsed;
            }
            @Override
            public FieldValues<Number> compile(String fieldName, Script script, ScriptCompiler compiler) {
                DoubleFieldScript.Factory scriptFactory = compiler.compile(script, DoubleFieldScript.CONTEXT);