AUI Sidebar Expand\collapse button is not a11y friendly when using Soy function

Description

Currently the collapse/expand button of the sidebar doesn't have a11y implementation, because in Confluence we use the Soy template function we can't add this implementation ourselves (it might be possible from the JS implementation) but we should probably add the implementation out of the box.

Environment

None

QA Kickoff Check-In

Usage described in documentation
Demonstration of all states
Interactive state (screen readers)
Visual regression tests
Unit tests
Navigation (only keyboard / only mouse)
Component render legibly

QA Demo Check-Out

P2 plugin
Browsers (Edge/IE11/Firefox/Chrome/Safari)
Resizing
Zoom in/out
Navigation (Keyboard/Mouse)
Focus
Element status (At Rest/Pressed/Selected/Read Only/Disabled)
Cursors
Tooltips
Audio

Assignee

Bartosz Cytrowski

Reporter

Maxim Leizerovich

Labels

None

Changelog entry text

None

Needs Doc

None

Story Points

1

Components

Sprint

Fix versions

Affects versions

Priority

Major
Configure