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

src/com/android/launcher3/model/LoaderCursor.java

@@ -349,7 +349,7 @@ public class LoaderCursor extends CursorWrapper {
      */
     public void checkAndAddItem(ItemInfo info, BgDataModel dataModel) {
         if (checkItemPlacement(info, dataModel.workspaceScreens)) {
-            dataModel.addItem(info, false);
+            dataModel.addItem(mContext, info, false);
         } else {
             markDeleted("Item position overlap");
         }