FileSystemConfiguration: Don't stop onDragOver if element matches

Rely on the index matching instead. During a drag, if onDragOver is
fired the index the item will be dragged to (the target index) will be
set. If the target index doesn't match the source index, the new
tempItemOrder is made and the new target index is set.

Initially this index is null, so even if the target index is the
same as the current index, the tempItemOrder and target index will be
set once.

By not shorting this event based on the visual layout, the drag state
gets initialized correctly every time.

Fixes #679

src/Components/CreateImageWizard/formComponents/FileSystemConfiguration.js

@@ -141,7 +141,7 @@ const FileSystemConfiguration = ({ ...props }) => {
         evt.preventDefault();
 
         const curListItem = evt.target.closest('tr');
-        if (!curListItem || !bodyref.current.contains(curListItem) || curListItem.id === draggedItemId) {
+        if (!curListItem || !bodyref.current.contains(curListItem)) {
             return null;
         }