message: fix(Group): use `size_border_radius_paper` token for `border-radius`
diff: .Group--card > .Group__inner {
  background: var(--background_content, var(--vkui--color_background_content));
  - border-radius: var(--vkui--size_border_radius--regular);
  + border-radius: var(--vkui--size_border_radius_paper--regular);
  position: relative;
  }
  