efl_ui_widget: optimize size / position setting
calling geometry set here is again calling the API in canvas object that
splits this call to size_set and position_set which means we spent quite
a bit of time in eo, just to call the same APIs we could call directly.
With this commit here, the calls are directly going to the right
objects, with the right API.
Reviewed-by: Mike Blumenkrantz <firstname.lastname@example.org>
Reviewed-by: Cedric BAIL <email@example.com>
Differential Revision: https://phab.enlightenment.org/D9619