use ObserveStale for liveData in reviewOngoingUsage

Bug: 166837151
Fixes: 167431234
Test: Open the privacy chip twice quickly. It should load both times
Change-Id: Id828a89c805b527c2b1457d5469fa6626c07065d
Merged-In: I2837d48b3e0c985d3023bf75f3876e0e97a0d9ae
diff --git a/src/com/android/permissioncontroller/permission/ui/handheld/ReviewOngoingUsageFragment.java b/src/com/android/permissioncontroller/permission/ui/handheld/ReviewOngoingUsageFragment.java
index fd8ef3d..5a0120f 100644
--- a/src/com/android/permissioncontroller/permission/ui/handheld/ReviewOngoingUsageFragment.java
+++ b/src/com/android/permissioncontroller/permission/ui/handheld/ReviewOngoingUsageFragment.java
@@ -107,7 +107,7 @@
         }
         ArrayList<String> appOps = new ArrayList<>(List.of(PHONE_CALL, VIDEO_CALL));
         mOpUsageLiveData = OpUsageLiveData.Companion.get(appOps, numMillis);
-        mOpUsageLiveData.observe(this, new Observer<Map<String, List<OpAccess>>>() {
+        mOpUsageLiveData.observeStale(this, new Observer<Map<String, List<OpAccess>>>() {
             @Override
             public void onChanged(Map<String, List<OpAccess>> opUsage) {
                 if (mOpUsageLiveData.isStale()) {