py/scheduler: Add missing MICROPY_WRAP_MP_SCHED_EXCEPTION usage.
This was missed in commit
#include "py/runtime.h"
-void mp_sched_exception(mp_obj_t exc) {
+void MICROPY_WRAP_MP_SCHED_EXCEPTION(mp_sched_exception)(mp_obj_t exc) {
MP_STATE_VM(mp_pending_exception) = exc;
#if MICROPY_ENABLE_SCHEDULER
if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
