RubyElement constructor
      
      RubyElement({ 
    
    
- required Element element,
- required List<StyledElement> children,
- String name = "ruby",
- required Node node,
Implementation
RubyElement({
  required this.element,
  required List<StyledElement> children,
  String name = "ruby",
  required super.node,
}) : super(
          name: name,
          alignment: PlaceholderAlignment.middle,
          style: Style(),
          elementId: element.id,
          children: children);