[Float][Fizz] include preloadModule and preinitModule on `react-d…

…om/server-rendering-stub` (facebook#27347)

When implementing `preloadModule` and `preinitModule` these methods were
not exposed on the server rendering stub when they should have been.
This PR corrects that omission.

packages/react-dom/server-rendering-stub.js

@@ -21,7 +21,9 @@ export {
   prefetchDNS,
   preconnect,
   preload,
+  preloadModule,
   preinit,
+  preinitModule,
   experimental_useFormStatus,
   experimental_useFormState,
   unstable_batchedUpdates,

packages/react-dom/src/__tests__/react-dom-server-rendering-stub-test.js

@@ -39,15 +39,17 @@ describe('react-dom-server-rendering-stub', () => {
   });
 
   // @gate enableFloat
-  it('provides preload and preinit exports', async () => {
+  it('provides preload, preloadModule, preinit, and preinitModule exports', async () => {
     function App() {
       ReactDOM.preload('foo', {as: 'style'});
+      ReactDOM.preloadModule('foomodule');
       ReactDOM.preinit('bar', {as: 'style'});
+      ReactDOM.preinitModule('barmodule');
       return <div>foo</div>;
     }
     const html = ReactDOMFizzServer.renderToString(<App />);
     expect(html).toEqual(
-      '<link rel="stylesheet" href="bar" data-precedence="default"/><link rel="preload" as="style" href="foo"/><div>foo</div>',
+      '<link rel="stylesheet" href="bar" data-precedence="default"/><script src="barmodule" type="module" async=""></script><link rel="preload" as="style" href="foo"/><link rel="modulepreload" href="foomodule"/><div>foo</div>',
     );
   });
 

packages/react-dom/src/server/ReactDOMServerRenderingStub.js

@@ -9,7 +9,9 @@
 
 export {
   preinit,
+  preinitModule,
   preload,
+  preloadModule,
   preconnect,
   prefetchDNS,
 } from '../shared/ReactDOMFloat';