Notify user switch event to NetworkController

When switching user NetworkController is not notified, as a result
AccessPointController won't be notified, still memorize the previous
userId which causes an unexpected AP list presentation on Wi-Fi Tile.

Improves d8c3ca4316.

Bug:31235488

Change-Id: I171343dc2bcf51df26622244c4f81c48f3736faa

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -3468,6 +3468,9 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
         if (mSecurityController != null) {
             mSecurityController.onUserSwitched(mCurrentUserId);
         }
+        if (mNetworkController != null) {
+            mNetworkController.onUserSwitched(mCurrentUserId);
+        }
     }
 
     private void resetUserSetupObserver() {