Add react-flight-server-fb package for Meta's internal bundler (#36309)

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## Summary

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Explain the **motivation** for making this change. What existing problem
does the pull request solve?
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- Adds a new react-flight-server-fb package providing RSC Flight
bindings for Meta's internal bundler stack
- Unlike webpack/turbopack integrations, this uses no manifest. Module
metadata is self-contained in ClientReference objects and sent over the
wire as-is
- Registers dom-browser-fb and dom-node-fb host configs for Rollup
builds targeting FB_WWW_DEV and FB_WWW_PROD

 Key design differences from other bundler

 - No build-time manifest
- Module IDs use Haste module names (e.g. `"MyComponent"`), with named
exports encoded as `"Module#export"`, rather than file paths resolved
through a manifest
- Client-side loading uses `Bootloader.handlePayload()` +
`JSResource().load()`
- `resolveClientReferenceMetadata` and `resolveClientReference` are
pass-throughs

## How did you test this change?

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their output, screenshots / videos if the pull request changes the user
interface.
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solve?
  If you leave this empty, your PR will very likely be closed.
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E2E integration test is set up on Meta's internal system.

DiffTrain build for [ad5dfc8](ad5dfc8)

Author: imdreamrunner

compiled/facebook-www/REVISION

@@ -1 +1 @@
-142cfde89edab3d4eabd6335458b4c8736cebfb6
+ad5dfc82b7107728da1430dd142f75b97b684dac

compiled/facebook-www/REVISION_TRANSFORMS

@@ -1 +1 @@
-142cfde89edab3d4eabd6335458b4c8736cebfb6
+ad5dfc82b7107728da1430dd142f75b97b684dac

compiled/facebook-www/React-dev.classic.js

@@ -1482,7 +1482,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.3.0-www-classic-142cfde8-20260422";
+    exports.version = "19.3.0-www-classic-ad5dfc82-20260427";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-dev.modern.js

@@ -1482,7 +1482,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.3.0-www-modern-142cfde8-20260422";
+    exports.version = "19.3.0-www-modern-ad5dfc82-20260427";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-prod.classic.js

@@ -610,4 +610,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-classic-142cfde8-20260422";
+exports.version = "19.3.0-www-classic-ad5dfc82-20260427";

compiled/facebook-www/React-prod.modern.js

@@ -610,4 +610,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-modern-142cfde8-20260422";
+exports.version = "19.3.0-www-modern-ad5dfc82-20260427";

compiled/facebook-www/React-profiling.classic.js

@@ -614,7 +614,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-classic-142cfde8-20260422";
+exports.version = "19.3.0-www-classic-ad5dfc82-20260427";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/React-profiling.modern.js

@@ -614,7 +614,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.3.0-www-modern-142cfde8-20260422";
+exports.version = "19.3.0-www-modern-ad5dfc82-20260427";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactART-dev.classic.js

@@ -20434,10 +20434,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.3.0-www-classic-142cfde8-20260422",
+        version: "19.3.0-www-classic-ad5dfc82-20260427",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.3.0-www-classic-142cfde8-20260422"
+        reconcilerVersion: "19.3.0-www-classic-ad5dfc82-20260427"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -20472,7 +20472,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.3.0-www-classic-142cfde8-20260422";
+    exports.version = "19.3.0-www-classic-ad5dfc82-20260427";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactART-dev.modern.js

@@ -20205,10 +20205,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.3.0-www-modern-142cfde8-20260422",
+        version: "19.3.0-www-modern-ad5dfc82-20260427",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.3.0-www-modern-142cfde8-20260422"
+        reconcilerVersion: "19.3.0-www-modern-ad5dfc82-20260427"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -20243,7 +20243,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.3.0-www-modern-142cfde8-20260422";
+    exports.version = "19.3.0-www-modern-ad5dfc82-20260427";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&