Removing static Context access using LauncherAppState

> This ensures that LauncherAppState is only accessed in the presence of
a valid context

Bug: 33032833
Change-Id: I955e5cb022f8bd6374681ae6c0720a2666d5b750

tests/src/com/android/launcher3/model/BaseModelUpdateTaskTestCase.java

@@ -128,7 +128,7 @@ public class BaseModelUpdateTaskTestCase extends ProviderTestCase2<TestLauncherP
                         classMap.put(commands[1], Class.forName(commands[2]));
                         break;
                     case "bgItem":
-                        bgDataModel.addItem(
+                        bgDataModel.addItem(targetContext,
                                 (ItemInfo) initItem(classMap.get(commands[1]), commands, 2), false);
                         break;
                     case "allApps":