RadioGroup:Button Group Rich Content

Build 4127 on andrew/cub-4723-uikit-consumer-api-gaps
Reviewing disabled
Baseline History
Build 412768a4b34
Current build. There are unaccepted changes, so build 4086 is still the baseline.
Build 38377f15f94
Accepted by Andrey Yamanov.
Build 3836f24dc82
Auto-accepted
Commenting is disabled because there's a newer build on this branch