[pm] revert lock changes for AppsFilter

ag/16176950 introduced a lock contention in AppsFilter between
"StateProvider.mLock" and "PackageManagerService.mSnapshotLock".
Reverting that part of the code.

BUG: 207105991
Test: manual
Change-Id: Id8cb79e2700af473dbc5dc675f630cfd311b2167

services/core/java/com/android/server/pm/AppsFilter.java

@@ -500,16 +500,10 @@ public class AppsFilter implements Watchable, Snappable {
                 forcedQueryablePackageNames[i] = forcedQueryablePackageNames[i].intern();
             }
         }
-        final StateProvider stateProvider = new StateProvider() {
-            // TODO: This lock and its handling should be owned by AppsFilter
-            private final Object mLock = new Object();
-
-            @Override
-            public void runWithState(CurrentStateCallback command) {
-                synchronized (mLock) {
-                    command.currentState(pms.getPackageStates(),
-                            injector.getUserManagerInternal().getUserInfos());
-                }
+        final StateProvider stateProvider = command -> {
+            synchronized (injector.getLock()) {
+                command.currentState(injector.getSettings().getPackagesLocked().untrackedStorage(),
+                        injector.getUserManagerInternal().getUserInfos());
             }
         };
         AppsFilter appsFilter = new AppsFilter(stateProvider, featureConfig,