Fix unnecessary blink of new created folders

When creating new folders from the directory tree, the new entry was
sometimes added in the wrong spot due to the way labels were compared.
The folders were then immediately reordered, causing the new folder to
lose its renaming state with the corresponding input box.

Issue fixed using the util.compareName function.

Test to be added.

Bug: 1004717
Change-Id: I1005e1061b099b195ea87d4b50b0a121f17d593b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1855145
Commit-Queue: Jeremie Boulic <jboulic@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704983}

ui/file_manager/file_manager/foreground/js/ui/directory_tree.js

@@ -1856,7 +1856,7 @@ class DirectoryTree extends cr.ui.Tree {
 
     let addAt = 0;
     while (addAt < parentItem.items.length &&
-           parentItem.items[addAt].entry.name < newDirectory.name) {
+           util.compareName(parentItem.items[addAt].entry, newDirectory) < 0) {
       addAt++;
     }