message: Spinner: move PanelHeader spinner styles down
diff: color: var(--icon_outline_secondary);
  }
  -.PanelHeader .Spinner {
  - color: currentColor;
  -}
  -
  .Spinner__self {
  animation: vkui-rotator var(--duration) linear infinite;
  transform-origin: center;
  .Spinner__self svg {
  transform: scale(1);
  }
  +
  +.PanelHeader .Spinner {
  + color: currentColor;
  +}
  