CoreForms.getDataFromForm doesn't retrieve data from ion-radio

If you add standard radio buttons in a form, those are added to form.elements and so the function getDataFromForm is able to find them and retrieve their value. However, when using ion-radio this doesn't happen, I guess because of shadow DOM.

We should check if this is "fixed" in Ionic 6 and, if it doesn't, explore if it'd be possible to retrieve the values in getDataFromForm.