appview: pages: remove z-index causing profile menu to sit behind

appview/pages/templates/layouts/repobase.html

···
             </div>
         </nav>
         <section
-            class="bg-white dark:bg-gray-800 p-6 rounded relative z-20 w-full mx-auto drop-shadow-sm dark:text-white"
+            class="bg-white dark:bg-gray-800 p-6 rounded relative w-full mx-auto drop-shadow-sm dark:text-white"
         >
             {{ block "repoContent" . }}{{ end }}
         </section>

appview/pages/templates/repo/pulls/patch.html

···
 {{ define "content" }}
 <section>
     <section
-        class="bg-white dark:bg-gray-800 p-6 rounded relative z-20 w-full mx-auto drop-shadow-sm dark:text-white"
+        class="bg-white dark:bg-gray-800 p-6 rounded relative w-full mx-auto drop-shadow-sm dark:text-white"
     >
         <div class="flex gap-3 items-center mb-3">
             <a href="/{{ .RepoInfo.FullName }}/pulls/{{ .Pull.PullId }}/" class="flex items-center gap-2 font-medium">