Refine update process for restrict tip.

When restrict tip update, we should also update app list unless it goes
from NEW to INVISIBLE. After that it won't show "0 apps been
restricted".

Change-Id: Iedf4288fcddfe632a9ba8c16afdfb5bc044bce2e
Fix: 79890132
Test: RunSettingsRoboTests

src/com/android/settings/fuelgauge/batterytip/tips/RestrictAppTip.java

@@ -103,6 +103,7 @@ public class RestrictAppTip extends BatteryTip {
         } else {
             mState = tip.getState();
             mShowDialog = tip.shouldShowDialog();
+            mRestrictAppList = ((RestrictAppTip) tip).mRestrictAppList;
         }
     }