[release-11.5.2] Share: Fix short links when root_url is different from the browser URL (#100202)

Share: Fix short links when root_url is different from the browser URL (#99950)

Share: Fix short links when appUrl is misconfigured
(cherry picked from commit cd7c9f8666)

Co-authored-by: Agnès Toulet <35176601+AgnesToulet@users.noreply.github.com>

public/app/core/utils/shortLinks.ts

@@ -70,7 +70,7 @@ export const createDashboardShareUrl = (dashboard: DashboardScene, opts: ShareLi
     slug: dashboard.state.meta.slug,
     currentQueryParams: location.search,
     updateQuery: urlParamsUpdate,
-    absolute: true,
+    absolute: !opts.useShortUrl,
   });
 };