efl_ui_win: repair scene event emission

efl_ui_win: repair scene event emission

It appears that EVAS_CALLBACK_FOCUS_IN / OUT is wrong here, as this is
for when a object gets focus but not the scene.

However, the inital event emission still does not work correctly, this
needs some further investigation.

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D9138