RadioGroup:With default value

Build 1281 on dzucconi/fix/radio-a11y
1200px
Reviewing disabled
The baseline is taller than the new snapshot (1168x134 to 1168x101).
Baseline History
Build 1281900c2b3
Current build. There are unaccepted changes, so build 1241 is still the baseline.
Build 450b70bff7
Auto-accepted
Build 4480129882
Accepted by Kieran.
Build 42030ddb14
Accepted by Christopher Pappas.
Commenting is disabled because there's a newer build on this branch