Use internal act for prod testing

Author: sebmarkbage

packages/react-native-renderer/src/__tests__/ReactNativeEvents-test.internal.js

@@ -68,7 +68,7 @@ beforeEach(() => {
   RCTEventEmitter =
     require('react-native/Libraries/ReactPrivate/ReactNativePrivateInterface').RCTEventEmitter;
   React = require('react');
-  act = React.act;
+  act = require('internal-test-utils').act;
   ReactNative = require('react-native-renderer');
   ResponderEventPlugin =
     require('react-native-renderer/src/legacy-events/ResponderEventPlugin').default;

packages/react-native-renderer/src/__tests__/ReactNativeMount-test.internal.js

@@ -32,7 +32,7 @@ describe('ReactNative', () => {
     jest.resetModules();
 
     React = require('react');
-    act = React.act;
+    act = require('internal-test-utils').act;
     StrictMode = React.StrictMode;
     ReactNative = require('react-native-renderer');
     ReactNativePrivateInterface = require('react-native/Libraries/ReactPrivate/ReactNativePrivateInterface');