JobSchedulerService:fix arrayIndexOutOfBoundsException to aviod

systemServer crash.

As can be seen from the AOSP code, the set collection mTrackedTasks is accessed under mLock, but there is no mLock lock in the reportNewIdleState function. Therefore, we should put onControllerStateChanged into the mLock lock for execution, just like all other Controllers calling this method with mLock, there is no risk of deadlock.

Test: OEM monkey test
Bug: 342554438
Change-Id: I596defa8ca018a7161cd149a54a029f6adb96937

apex/jobscheduler/service/java/com/android/server/job/controllers/IdleController.java

@@ -48,6 +48,7 @@ public final class IdleController extends RestrictingController implements Idlen
     private static final String TAG = "JobScheduler.IdleController";
     // Policy: we decide that we're "idle" if the device has been unused /
     // screen off or dreaming or wireless charging dock idle for at least this long
+    @GuardedBy("mLock")
     final ArraySet<JobStatus> mTrackedTasks = new ArraySet<>();
     IdlenessTracker mIdleTracker;
     private final FlexibilityController mFlexibilityController;
@@ -118,8 +119,10 @@ public final class IdleController extends RestrictingController implements Idlen
             for (int i = mTrackedTasks.size()-1; i >= 0; i--) {
                 mTrackedTasks.valueAt(i).setIdleConstraintSatisfied(nowElapsed, isIdle);
             }
+            if (!mTrackedTasks.isEmpty()) {
+                mStateChangedListener.onControllerStateChanged(mTrackedTasks);
+            }
         }
-        mStateChangedListener.onControllerStateChanged(mTrackedTasks);
     }
 
     /**