Fix "ref-issue" handling in markup (#35739) (#35771)

Backport #35739 by wxiaoguang

This is a follow up for #35662, and also fix #31181, help #30275, fix
#31161

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

web_src/js/modules/tippy.ts

@@ -209,3 +209,7 @@ export function showTemporaryTooltip(target: Element, content: Content): void {
     },
   });
 }
+
+export function getAttachedTippyInstance(el: Element): Instance | null {
+  return el._tippy ?? null;
+}