The spec for this action:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#G11.2111850
An example of a form using this action:
https://www2.illinois.gov/rev/forms/reg/Documents/reg-1-mr.pdf
constructor(parameters) {
    super(parameters, { isRenderable: parameters.renderForms });
  }
  render() {
    this.container.className = "buttonWidgetAnnotation radioButton";
    const storage = this.annotationStorage;
    const data = this.data;
    const id = data.id;
    let value = storage.getValue(id, {
      value: data.fieldValue === data.buttonValue,
    }).value;
    if (typeof value === "string") {
      
      value = value !== data.buttonValue;
      storage.setValue(id, { value });
    }
    const element = document.createElement("input");
    GetElementsByNameSet.add(element);
    element.disabled = data.readOnly;
    element.type = "radio";
    element.name = data.fieldName;
    if (value) {
      element.setAttribute("checked", true);
    }