message: fix(content-item-horizontal): fix heading styling
diff: :host(#{$dds-prefix}-content-item-horizontal) ::slotted([slot='heading']),
  .#{$prefix}--content-item-horizontal__item--heading {
  + display: block;
  color: $text-01;
  @include carbon--type-style('expressive-heading-03', true);
  @include carbon--breakpoint(sm) {
  