Add sched_enqueue_task() in mo_task_resume()

Previously, mo_task_resume() only changed resumed task state to TASK_READY,
but didn't enqueue it into ready queue. As a result, the scheduler could
not select the resumed task for execution.

This change adds sched_enqueue_task() to insert the resumed task into the
appropriate ready queue and update the ready bitmap, ensuring the resumed
task becomes schedulable again.

Author: vicLin8712

kernel/task.c

@@ -813,9 +813,8 @@ int32_t mo_task_resume(uint16_t id)
         CRITICAL_LEAVE();
         return ERR_TASK_CANT_RESUME;
     }
-
-    /* mark as ready - scheduler will find it */
-    task->state = TASK_READY;
+    /* Enqueue resumed task into ready queue */
+    sched_enqueue_task(task);
 
     CRITICAL_LEAVE();
     return ERR_OK;