Write namespace declaration on root element only?

Hello and thank you for such an awesome project!

I'm using dataformat-xml to create a video manifest (MPEG-DASH mpd), and for aesthetic reasons I'd really like if it could write all namespace declarations on the root element.

The XML I generate currently looks like this:
```xml

https://example.com/license

```

but I want to move the "xmlns:dashif="https://dashif.org/guidelines/clearKey"" to . Like this:

```xml

https://example.com/license

```

Is it possible to configure / override something in XmlMapper or Woodstox to make this work?

Thanks a lot,
Anton

Java 21 with `com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.17.2`