Bug report

According to the ARIA spec, the TreeView non-parent nodes should not have the aria-expanded. Otherwise they would be incorrectly described to assistive technologies as parent nodes.

Reproduction of the problem

1. Open this Demo - https://demos.telerik.com/kendo-ui/treeview/remote-data-binding
2. Inspect the li element for a node that has no children e.g Janet Leverling

Expected/desired behavior

The bottom nodes shouldn't have an aria-expanded attribute.

Environment

• Kendo UI version: 2022.3.913
• Browser: [all]