fix: set lower z-index for the chart container

Author: graphieros

app/pages/package-timeline/[[org]]/[packageName].vue

@@ -324,7 +324,7 @@ useSeoMeta({
       page="timeline"
     />
 
-    <div class="sticky top-24 z-10 bg-bg mt-8">
+    <div class="sticky top-24 z-1 bg-bg mt-8">
       <div class="container w-full">
         <div class="mx-auto">
           <PackageTimelineChart