The sorting of nodes in tree table view is hard-coded. There are just compared
display names. This is not sufficient in some cases (see issue #55226). IMHO a
similar approach that is used for properties should be implemented.
In TreeTableView.SortedNodeTreeModel.getRowComparator() I would expect e.g. a
check whether the Node implements Comparable and use that comparable instead of
fixed in core-main/rev/de50002894c7