genlist: Fixed item select logic when item select mode is ALWAYS.
genlist: Fixed item select logic when item select mode is ALWAYS.

Summary:
ELM_OBJECT_SELECT_MODE_ALWAYS mode for elm_genlist_item_select_mode
was broken. In the item select routine, item mode(it->mode) was not
checked. So, I added the check routine there.

@fix

Test Plan: I revised the elementary_test code and tested with that.

Reviewers: raster, seoz

Reviewed By: seoz

Subscribers: SanghyeonLee, bluezery

Differential Revision: https://phab.enlightenment.org/D1347

FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary