fix: graph and tooltip sometimes not showing

layouts/partials/graph.html

@@ -1,5 +1,4 @@
 <script
-  async
   src="https://cdn.jsdelivr.net/npm/d3@6.7.0/dist/d3.min.js"
   integrity="sha256-+7jaYCp29O1JusNWHaYtgUn6EhuP0VaFuswhNV06MyI="
   crossorigin="anonymous"

layouts/partials/head.html

@@ -75,7 +75,7 @@
   <script src="https://cdn.jsdelivr.net/npm/@floating-ui/dom@1.2.1"></script>
   {{ $popover := resources.Get "js/popover.js" | resources.Fingerprint "md5" |
   resources.Minify }}
-  <script async src="{{$popover.Permalink}}"></script>
+  <script defer src="{{$popover.Permalink}}"></script>
 
   <!-- Optional scripts -->
   {{ if $data.enableCodeBlockTitle | default $.Site.Data.config.enableCallouts }}