fix: mermaid rendering broken after rehype-pretty-code bump (closes #638)

Jacky Zhao

2023-12-19 443cd53a1acf33ac0aaa34e0e75760d3da912d18

 quartz/components/MobileOnly.tsx

@@ -4,9 +4,7 @@
  if (component) {
    const Component = component
    function MobileOnly(props: QuartzComponentProps) {
      return <div class="mobile-only">
        <Component {...props} />
      </div>
      return <Component displayClass="mobile-only" {...props} />
    }

    MobileOnly.displayName = component.displayName