nvda

25eb3a46 - Stop activating focus mode for non-focusable table cells in IE 10. Fixes #3248.

Stop activating focus mode for non-focusable table cells in IE 10. Fixes #3248. Base virtualBuffer: always use an NVDAObject's isFocusable property rather than its focusable state, as isFocusable in some cases has been tailored to handle certain situations.