list: Reset prev_focused_item when prev_focused_item is deleted.
list: Reset prev_focused_item when prev_focused_item is deleted.

This is inspired by a2c680d684601d8df725e8293616c880f07d3ca2.

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