message: fix mistake for button border color
diff: .boxel-button--kind-secondary-light:not(:disabled) {
  /* transparent on light background */
  --boxel-button-color: transparent;
  - --boxel-button-border: 1px solid var(--boxel-light-300);
  + --boxel-button-border: 1px solid var(--boxel-purple-300);
  --boxel-button-text-color: var(--boxel-dark);
  }
  