[Flight][Fizz] schedule work async (#29551)

While most builds of Flight and Fizz schedule work in new tasks some do
execute work synchronously. While this is necessary for legacy APIs like
renderToString for modern APIs there really isn't a great reason to do
this synchronously.

We could schedule works as microtasks but we actually want to yield so
the runtime can run events and other things that will unblock additional
work before starting the next work loop.

This change updates all non-legacy uses to be async using the best
availalble macrotask scheduler.

Browser now uses postMessage
Bun uses setTimeout because while it also supports setImmediate the
scheduling is not as eager as the same API in node
the FB build also uses setTimeout

This change required a number of changes to tests which were utilizing
the sync nature of work in the Browser builds to avoid having to manage
timers and tasks. I added a patch to install MessageChannel which is
required by the browser builds and made this patched version integrate
with the Scheduler mock. This way we can effectively use `act` to flush
flight and fizz work similar to how we do this on the client.

DiffTrain build for commit b526a0a.

Author: gnoff

compiled-rn/VERSION_NATIVE_FB

@@ -1 +1 @@
-19.0.0-native-fb-fd6e130b00-20240606
+19.0.0-native-fb-b526a0a419-20240606

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-test-renderer/cjs/ReactTestRenderer-dev.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<bfa319a88e7ba395f362da35c7c6ae6d>>
+ * @generated SignedSource<<aeb5412de032acf9afc7bd5d88a329b3>>
  */
 
 'use strict';
@@ -23580,7 +23580,7 @@ identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transition
   return root;
 }
 
-var ReactVersion = '19.0.0-native-fb-fd6e130b00-20240606';
+var ReactVersion = '19.0.0-native-fb-b526a0a419-20240606';
 
 /*
  * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-test-renderer/cjs/ReactTestRenderer-prod.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<647ed1e416c3ed5bd4544633bb22aa90>>
+ * @generated SignedSource<<071298c9ff96ae03132c2f6189a9505d>>
  */
 
 "use strict";
@@ -9336,7 +9336,7 @@ var devToolsConfig$jscomp$inline_1048 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "19.0.0-native-fb-fd6e130b00-20240606",
+  version: "19.0.0-native-fb-b526a0a419-20240606",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1235 = {
@@ -9367,7 +9367,7 @@ var internals$jscomp$inline_1235 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "19.0.0-native-fb-fd6e130b00-20240606"
+  reconcilerVersion: "19.0.0-native-fb-b526a0a419-20240606"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1236 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-test-renderer/cjs/ReactTestRenderer-profiling.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<9f25c533425fd58fff1087add02bb332>>
+ * @generated SignedSource<<2b7f28997d14368e8b072ffc1497cb77>>
  */
 
 "use strict";
@@ -9958,7 +9958,7 @@ var devToolsConfig$jscomp$inline_1131 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "19.0.0-native-fb-fd6e130b00-20240606",
+  version: "19.0.0-native-fb-b526a0a419-20240606",
   rendererPackageName: "react-test-renderer"
 };
 (function (internals) {
@@ -10002,7 +10002,7 @@ var devToolsConfig$jscomp$inline_1131 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "19.0.0-native-fb-fd6e130b00-20240606"
+  reconcilerVersion: "19.0.0-native-fb-b526a0a419-20240606"
 });
 exports._Scheduler = Scheduler;
 exports.act = act;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react/cjs/React-dev.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<da04ffd0168478b278088d1dd71f702c>>
+ * @generated SignedSource<<27df3fd4e7100982c8f4ef7d518a4510>>
  */
 
 'use strict';
@@ -24,7 +24,7 @@ if (
 }
 var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags');
 
-var ReactVersion = '19.0.0-native-fb-fd6e130b00-20240606';
+var ReactVersion = '19.0.0-native-fb-b526a0a419-20240606';
 
 // Re-export dynamic flags from the internal module.
 var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react/cjs/React-prod.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<530a2382ebd13dd17d916c2400554edd>>
+ * @generated SignedSource<<02284763378c01e6ceb319a485aebf4e>>
  */
 
 "use strict";
@@ -604,4 +604,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-native-fb-fd6e130b00-20240606";
+exports.version = "19.0.0-native-fb-b526a0a419-20240606";

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react/cjs/React-profiling.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<a797769e754cbf0362b7fbf62774837d>>
+ * @generated SignedSource<<27f9d9eb4116e19c56a7659cf6b57e21>>
  */
 
 "use strict";
@@ -608,7 +608,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.0.0-native-fb-fd6e130b00-20240606";
+exports.version = "19.0.0-native-fb-b526a0a419-20240606";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION

@@ -1 +1 @@
-fd6e130b00d4d1fe211c75e981160131669c4412
+b526a0a419029eea31f4d967951b6feca123012d

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<5c37d417b9b99eae764bfce3356ed6b3>>
+ * @generated SignedSource<<557c39946498737c4c67c5ed81c7a5e8>>
  */
 
 'use strict';
@@ -26316,7 +26316,7 @@ identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transition
   return root;
 }
 
-var ReactVersion = '19.0.0-rc-fd6e130b00-20240606';
+var ReactVersion = '19.0.0-rc-b526a0a419-20240606';
 
 /*
  * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js

@@ -7,7 +7,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<d1f70b65b4e74dcab410f7c82fd04449>>
+ * @generated SignedSource<<5d81da86232cf85d0e472d78b33810df>>
  */
 
 "use strict";
@@ -10591,7 +10591,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1125 = {
     findFiberByHostInstance: getInstanceFromNode,
     bundleType: 0,
-    version: "19.0.0-rc-fd6e130b00-20240606",
+    version: "19.0.0-rc-b526a0a419-20240606",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForInstance: getInspectorDataForInstance,
@@ -10634,7 +10634,7 @@ var internals$jscomp$inline_1351 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "19.0.0-rc-fd6e130b00-20240606"
+  reconcilerVersion: "19.0.0-rc-b526a0a419-20240606"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1352 = __REACT_DEVTOOLS_GLOBAL_HOOK__;