feat: add rhc dot badge color to dh theme

Author: TessaViergever

packages/storybook/src/themes/_denhaag.scss

@@ -18,6 +18,7 @@
   --nl-paragraph-margin-block-end: 16px;
   --nl-skip-link-background-color: var(--denhaag-color-ocher-2);
   --nl-skip-link-color: var(--denhaag-color-blue-5);
+  --rhc-dot-badge-color: var(--denhaag-color-red-3);
 
   /* Amsterdam component tokens */
   --ams-grid-wide-column-count: 12;