gtl unSelectAll - fix missing dispatch, call reduceSelectedItem directly
gtl unSelectAll - fix missing dispatch, call reduceSelectedItem directly

unSelectAll tried to dispatch an event, but it's being called from a reducer,
so doing the reduction directly

and making sure `state.rows` is never set to `false` when unselecting

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic