Revert "[react-www] remove forked bundle" (#25837)

Reverts facebook/react#25831

dangerfile.js

@@ -46,6 +46,7 @@ const CRITICAL_ARTIFACT_PATHS = new Set([
   'oss-experimental/react-dom/cjs/react-dom.production.min.js',
   'facebook-www/ReactDOM-prod.classic.js',
   'facebook-www/ReactDOM-prod.modern.js',
+  'facebook-www/ReactDOMForked-prod.classic.js',
 ]);
 
 const kilobyteFormatter = new Intl.NumberFormat('en', {

scripts/rollup/bundles.js

@@ -163,6 +163,17 @@ const bundles = [
     externals: ['react'],
   },
 
+  /******* React DOM - www - Uses forked reconciler *******/
+  {
+    moduleType: RENDERER,
+    bundleTypes: [FB_WWW_DEV, FB_WWW_PROD, FB_WWW_PROFILING],
+    entry: 'react-dom',
+    global: 'ReactDOMForked',
+    minifyWithProdErrorCodes: true,
+    wrapWithModuleBoundaries: true,
+    externals: ['react'],
+  },
+
   /******* Test Utils *******/
   {
     moduleType: RENDERER_UTILS,