message: fix: `none` is not a `border-radius` value
diff: }
  .PullToRefresh--ios .PullToRefresh__spinner {
  - border-radius: none;
  + border-radius: 0;
  box-shadow: none;
  background: none;
  color: var(--icon_outline_secondary, var(--vkui--color_icon_medium));
  