Rename batchingmode file and comment

Author: rickhanlonii

packages/react-reconciler/src/__tests__/ReactBatchedMode-test.internal.js renamed to packages/react-reconciler/src/__tests__/ReactBatching-test.internal.js

@@ -107,8 +107,8 @@ describe('ReactBlockingMode', () => {
     );
 
     expect(Scheduler).toFlushAndYield(['A', 'Suspend! [B]', 'C', 'Loading...']);
-    // In Legacy Mode, A and B would mount in a hidden primary tree. In Batched
-    // and Concurrent Mode, nothing in the primary tree should mount. But the
+    // In Legacy Mode, A and B would mount in a hidden primary tree. In
+    // Concurrent Mode, nothing in the primary tree should mount. But the
     // fallback should mount immediately.
     expect(root).toMatchRenderedOutput('Loading...');