Fix bypass BAL via LocationManager.requestFlush

Bug: 235823542
Test: atest LocationProviderManagerTest and manual tests
Change-Id: I2a0fa7b99c3ad5ae839d8018ec70cb5c26e33240

services/core/java/com/android/server/location/provider/LocationProviderManager.java

@@ -258,6 +258,7 @@ public class LocationProviderManager extends
         public void deliverOnFlushComplete(int requestCode) throws PendingIntent.CanceledException {
             BroadcastOptions options = BroadcastOptions.makeBasic();
             options.setDontSendToRestrictedApps(true);
+            options.setPendingIntentBackgroundActivityLaunchAllowed(false);
 
             mPendingIntent.send(mContext, 0, new Intent().putExtra(KEY_FLUSH_COMPLETE, requestCode),
                     null, null, null, options.toBundle());