Page tree : Missing ARIA role on the expand/collapse link.

Issue Summary

In Confluence sidebar, the expand/collapse elements present under page tree section are announced as links incorrectly.

Steps to Reproduce

1. Navigate to Confluence homepage.
2. Navigate to "Spaces" menu in header section.
3. Activate any space link from the menu.
4. Navigate to the Page tree section in left sidebar.
5. Navigate to expand/collapse elements.

Expected Results

While navigating with Keyboard & screen reader, when user navigate to the expand/collapse elements inside page tree section, the screen reader announces them as links. But the elements functions as buttons i.e to expand/collapse the page tree. The native <button> element or ARAI role="button" is not used for the link element.

Actual Results

The screen reader should announce the expand/collapse elements inside page tree section as "buttons". 

Mark the elements inside native HTML <button> elements or provide ARAI role="button" to the link elements the source code.

Screenshot

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available