Accessibility: Set aria-hidden attribute on elements while dialogs are open
Accessibility: Set aria-hidden attribute on elements while dialogs are open

Bug: 65473
Change-Id: Iba25b9bc19d6c7d6df4c65cb1a07766f903c6ee5

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui