Fixed the position of loading spinner

Fixed the position of the loading spinner in the issue template dropdown
toggle. It was previously just positioned with the content, this now
correctly places it in the same place the chevron down is

Closes #28906

app/assets/stylesheets/framework/dropdowns.scss

@@ -107,11 +107,12 @@
 
     &.fa-spinner {
       font-size: 16px;
-      margin-top: -8px;
+      margin-top: -3px;
     }
   }
 
-  .fa-chevron-down {
+  .fa-chevron-down,
+  .fa-spinner {
     position: absolute;
     top: 11px;
     right: 8px;

changelogs/unreleased/issue-descrpiption-spinner-off.yml

+---
+title: Fixed loading spinner position on issue template toggle
+merge_request:
+author: