genlist needs to also highlight items on keyboard select
genlist needs to also highlight items on keyboard select

this should probably just happen in _item_select() to avoid future incidents

ref T1986

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