Revert "Remove hydrate entry point from www builds" (#26413)

kassens · web-flow · commit eaccf27c2ec8 · 2023-03-16T14:01:20.000-04:00
Reverts #26400. Will take a look at the test failures before re-merging.
diff --git a/packages/react-dom/index.classic.fb.js b/packages/react-dom/index.classic.fb.js
@@ -24,6 +24,7 @@ export {
   hydrateRoot,
   findDOMNode,
   flushSync,
+  hydrate,
   render,
   unmountComponentAtNode,
   unstable_batchedUpdates,
