message: vertically center the done icon
diff: .boxel-cta-block__main-action-area ~ .boxel-cta-block__done-icon {
  display: block;
  grid-area: done-icon;
  + align-self: center;
  --icon-color: var(--cta-block-emphasis-text-color);
  margin-right: var(--boxel-sp-xxs);
  