feat: use floating-ui for better popover positioning

layouts/partials/head.html

@@ -44,6 +44,9 @@
   <script src="{{$darkMode.Permalink}}"></script>
   {{partial "katex.html" .}}
 
+    
+  <script src="https://unpkg.com/@floating-ui/core@0.7.3"></script>
+  <script src="https://unpkg.com/@floating-ui/dom@0.5.4"></script>
   {{ $popover := resources.Get "js/popover.js" | resources.Fingerprint "md5" |
   resources.Minify }}
   <script src="{{$popover.Permalink}}"></script>