Pass parent attributes to rawXML child components (#2922)

* Pass parent attributes to child rawXML child components
---------

Co-authored-by: Nicole Orchard <nicoleorchard@Nicoles-MBP.attlocal.net>
Co-authored-by: Nicole Orchard <nicoleorchard@Nicoles-MacBook-Pro.local>

packages/mjml-core/src/createComponent.js

@@ -207,7 +207,10 @@ export class BodyComponent extends Component {
     children = children || this.props.children
 
     if (rawXML) {
-      return children.map((child) => jsonToXML(child)).join('\n')
+      return children.map((child) => {
+        child.attributes = {...attributes, ...child.attributes}
+        return jsonToXML(child)
+      }).join('\n')
     }
 
     const sibling = children.length