Merge pull request #3459 from overleaf/ta-dragged-overflow

[ReactFileTree] Fix Overflow of Dragged Preview

GitOrigin-RevId: be73883f49a84ab5455ecfaa0a3b7f32126cbd5e

services/web/frontend/stylesheets/app/editor/file-tree.less

@@ -339,6 +339,9 @@
 
   .dnd-draggable-preview-item {
     line-height: @file-tree-line-height;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
   }
 }