Some apps which use the machanism provided in `core/src/OC/apps.js`
for toggle slide up/down in the side bar would equally rely on same for
`aria-expanded` state change.
For example : https://github.com/nextcloud/activity/pull/1230
Signed-off-by: fenn-cs <fenn25.fn@gmail.com>
Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>