Add new link utilities, icon link helper, and update colored link helpers (#37762)

* Add new link utilities, update colored link helpers

* Remove commented out code

* Fixes

* Remove examples changes

* Fixes and copy

* Fix icon-link instances on homepage

* Bump bundlewatch

* Fix node-sass issue for rgba() function bug

* More bundlewatch

* One more time after merge

* Add callout for a11y

* Hover and focus-visible

* Add a11y callouts

* Remove duplicate for now

* More code review feedback

site/layouts/partials/home/css-variables.html

@@ -8,9 +8,9 @@
       Bootstrap 5 is evolving with each release to better utilize CSS variables for global theme styles, individual components, and even utilities. We provide dozens of variables for colors, font styles, and more at a <code>:root</code> level for use anywhere. On components and utilities, CSS variables are scoped to the relevant class and can easily be modified.
     </p>
     <p class="d-flex align-items-start flex-column lead fw-normal mb-0">
-      <a href="/docs/{{ .Site.Params.docs_version }}/customize/css-variables/" class="icon-link fw-semibold mb-3">
+      <a href="/docs/{{ .Site.Params.docs_version }}/customize/css-variables/" class="icon-link icon-link-hover fw-semibold mb-3">
         Learn more about CSS variables
-        <svg class="bi"><use xlink:href="#arrow-right-short"></use></svg>
+        <svg class="bi"><use xlink:href="#arrow-right"></use></svg>
       </a>
     </p>
   </div>