efl_ui_layout: check theme version better

when we are having the version 1.23.99 we are preparing the release that
is going to be released with version 1.24. With this commit we can
declare theme versions to be for 1.24 which the version number is 1.23.

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D10891