Merge branch '33861-more-actions-dropdown-hidden-by-end-of-diff' into 'master'

Resolve "More actions dropdown hidden by end of diff"

Closes #33861

See merge request !12380

app/assets/stylesheets/pages/diff.scss

@@ -20,8 +20,6 @@
   }
 
   .diff-content {
-    overflow: auto;
-    overflow-y: hidden;
     background: $white-light;
     color: $gl-text-color;
     border-radius: 0 0 3px 3px;