When using radio select add-ons, the providers selection is reset on page reload

[Valentina R]

Reported here.

To reproduce, check this example, select the radio option and a provider and add to the cart. The page reloads but a staff member is not selected - the No pref shows instead. If a select dropdown is used instead, the staff is selected after page refresh.

[Željan Topić]

Fixed with 4.12.1.