Implement ARIA tree view pattern - Add accessibility attributes
What does this MR do?
This MR implements the ARIA tree view pattern by adding the necessary accessibility attributes to improve screen reader support.
Follow-up work
Keyboard navigation functionality will be implemented in a separate follow-up MR to keep the changes focused and reviewable.
Related issue
Issue #541107 (closed)
Testing
- Enable the
repository_file_tree_browser - Navigate the repository using the File tree browser
Edited by Jacques Erasmus