Ensure internal links use pointer cursor

We have to set this manually since we're implementing Next links with an
onClick handler to push the router to workaround a Next Link +
NavigationMenu.Link conflict.

apps/squareone/src/components/Header/AppsMenu.js

@@ -41,7 +41,9 @@ const Link = ({ href, internal, ...props }) => {
   if (internal) {
     return (
       <PrimaryNavigation.Link active={isActive}>
-        <span onClick={() => router.push(href)}>{props.children}</span>
+        <span style={{ cursor: 'pointer' }} onClick={() => router.push(href)}>
+          {props.children}
+        </span>
       </PrimaryNavigation.Link>
     );
   }