Use same name attribute for every radio within the same radio-group

[renaudleo]

What Changed & Why

The radio widget uses a name attribute, but the radio-group widget doesn't actually pass that param to radio, so radio buttons in a radio group don't have any name attribute.

Testing

List step-by-step how to test the changes.

• Use a radio-group widget
• Inspect the radio input html
• It should now have a name attribute 🎉