Test for https://bugs.webkit.org/show_bug.cgi?id=32013.

For manual testing, focus a radio button in the first group and use the arrow keys. Changing the checked radio button should fire change events.

a b c

For manual testing, focus a radio button in the second group and use the arrow keys. Change events should still be dispatched but the checked radio should not change.

d e f

b dispatched change event
c dispatched change event
e dispatched change event
f dispatched change event
PASS: a is not checked
PASS: b is not checked
PASS: c is checked
PASS: d is checked
PASS: e is not checked
PASS: f is not checked