In the following example, the XML output is correctly indented on JDK 16 and earlier, and incorrectly indented on JDK 17 and newer.

The regression bisects to the fix for JDK-8265073 (XML transformation and indentation when using xml:space)

```
import java.io.ByteArrayOutputStream;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import org.xml.sax.helpers.AttributesImpl;

public final class Test {

  public static void main(String[] args) throws Exception {
    SAXTransformerFactory transformerFactory =
        (SAXTransformerFactory) TransformerFactory.newInstance();
    TransformerHandler transformerHandler = transformerFactory.newTransformerHandler();
    Transformer transformer = transformerHandler.getTransformer();
    transformer.setOutputProperty(OutputKeys.INDENT, "yes");
    transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    transformerHandler.setResult(new StreamResult(baos));

    AttributesImpl attributes = new AttributesImpl();
    transformerHandler.startDocument();

    attributes.addAttribute("", "xml:space", "xml:space", "BAR", "preserve");
    transformerHandler.startElement("", "Foo", "Foo", attributes);
    attributes.clear();

    attributes.addAttribute("", "bar", "bar", "BAR", "test-val");

    transformerHandler.startElement("", "foo", "foo", attributes);
    transformerHandler.endElement("", "foo", "foo");

    transformerHandler.endElement("", "Foo", "Foo");
    transformerHandler.endDocument();

    String output = baos.toString("UTF-8");
    System.err.println(output);
    System.exit(output.split("\\R").length == 1 ? 1 : 0);
  }
}
```

Expected:

<?xml version="1.0" encoding="UTF-8"?><Foo xml:space="preserve">
  <foo bar="test-val"/>
</Foo>

Actual:

<?xml version="1.0" encoding="UTF-8"?><Foo xml:space="preserve"><foo bar="test-val"/></Foo>