message: [improvement] Toast: update icon size
diff: @toast-line-height: 20px;
  @toast-border-radius: 4px;
  @toast-background-color: rgba(0, 0, 0, .7);
  -@toast-icon-size: 50px;
  +@toast-icon-size: 48px;
  @toast-text-min-width: 96px;
  @toast-text-padding: 8px 12px;
  @toast-default-padding: 15px;
  