[Fiber] Track SuspendedState on stack instead of global (#34486)

Stacked on #34481.

We currently track the suspended state temporarily with a global which
is safe as long as we always read it during a sync pass. However, we
sometimes read it in closures and then we have to be carefully to pass
the right one since it's possible another commit on a different root has
started at that point. This avoids this footgun.

Another reason to do this is that I want to read it in
`startViewTransition` which is in an async gap after which point it's no
longer safe. So I have to pass that through the `commitRoot` bound
function.

DiffTrain build for [5d49b2b](5d49b2b)

Author: sebmarkbage

compiled/facebook-www/REVISION

@@ -1 +1 @@
-ae22247dce1449574cd324cae0d8aa0d4824a937
+5d49b2b7f42b6aebe749914fbd06640ded63c001

compiled/facebook-www/REVISION_TRANSFORMS

@@ -1 +1 @@
-ae22247dce1449574cd324cae0d8aa0d4824a937
+5d49b2b7f42b6aebe749914fbd06640ded63c001

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

@@ -1419,7 +1419,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-classic-ae22247d-20250915";
+    exports.version = "19.2.0-www-classic-5d49b2b7-20250915";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -1419,7 +1419,7 @@ __DEV__ &&
     exports.useTransition = function () {
       return resolveDispatcher().useTransition();
     };
-    exports.version = "19.2.0-www-modern-ae22247d-20250915";
+    exports.version = "19.2.0-www-modern-5d49b2b7-20250915";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -602,4 +602,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-ae22247d-20250915";
+exports.version = "19.2.0-www-classic-5d49b2b7-20250915";

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

@@ -602,4 +602,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-ae22247d-20250915";
+exports.version = "19.2.0-www-modern-5d49b2b7-20250915";

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

@@ -606,7 +606,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-classic-ae22247d-20250915";
+exports.version = "19.2.0-www-classic-5d49b2b7-20250915";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -606,7 +606,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactSharedInternals.H.useTransition();
 };
-exports.version = "19.2.0-www-modern-ae22247d-20250915";
+exports.version = "19.2.0-www-modern-5d49b2b7-20250915";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -14853,6 +14853,7 @@ __DEV__ &&
                 workInProgressRootInterleavedUpdatedLanes,
                 workInProgressSuspendedRetryLanes,
                 startTime,
+                null,
                 IMMEDIATE_COMMIT,
                 renderStartTime,
                 forceSync
@@ -14937,12 +14938,13 @@ __DEV__ &&
     ) {
       root.timeoutHandle = -1;
       didSkipSuspendedSiblings = finishedWork.subtreeFlags;
+      var suspendedState = null;
       if (
         (enableViewTransition && (lanes & 335544064) === lanes) ||
         didSkipSuspendedSiblings & 8192 ||
         16785408 === (didSkipSuspendedSiblings & 16785408)
       )
-        (appearingViewTransitions = null),
+        (appearingViewTransitions = suspendedState = null),
           accumulateSuspenseyCommitOnFiber(finishedWork),
           (lanes & 62914560) === lanes
             ? globalMostRecentFallbackTime - now$1()
@@ -14960,6 +14962,7 @@ __DEV__ &&
         updatedLanes,
         suspendedRetryLanes,
         exitStatus,
+        suspendedState,
         suspendedCommitReason,
         completedRenderStartTime,
         completedRenderEndTime
@@ -15994,6 +15997,7 @@ __DEV__ &&
       updatedLanes,
       suspendedRetryLanes,
       exitStatus,
+      suspendedState,
       suspendedCommitReason,
       completedRenderStartTime,
       completedRenderEndTime
@@ -19761,10 +19765,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.2.0-www-classic-ae22247d-20250915",
+        version: "19.2.0-www-classic-5d49b2b7-20250915",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.2.0-www-classic-ae22247d-20250915"
+        reconcilerVersion: "19.2.0-www-classic-5d49b2b7-20250915"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -19798,7 +19802,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.2.0-www-classic-ae22247d-20250915";
+    exports.version = "19.2.0-www-classic-5d49b2b7-20250915";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

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

@@ -14671,6 +14671,7 @@ __DEV__ &&
                 workInProgressRootInterleavedUpdatedLanes,
                 workInProgressSuspendedRetryLanes,
                 startTime,
+                null,
                 IMMEDIATE_COMMIT,
                 renderStartTime,
                 forceSync
@@ -14755,12 +14756,13 @@ __DEV__ &&
     ) {
       root.timeoutHandle = -1;
       didSkipSuspendedSiblings = finishedWork.subtreeFlags;
+      var suspendedState = null;
       if (
         (enableViewTransition && (lanes & 335544064) === lanes) ||
         didSkipSuspendedSiblings & 8192 ||
         16785408 === (didSkipSuspendedSiblings & 16785408)
       )
-        (appearingViewTransitions = null),
+        (appearingViewTransitions = suspendedState = null),
           accumulateSuspenseyCommitOnFiber(finishedWork),
           (lanes & 62914560) === lanes
             ? globalMostRecentFallbackTime - now$1()
@@ -14778,6 +14780,7 @@ __DEV__ &&
         updatedLanes,
         suspendedRetryLanes,
         exitStatus,
+        suspendedState,
         suspendedCommitReason,
         completedRenderStartTime,
         completedRenderEndTime
@@ -15807,6 +15810,7 @@ __DEV__ &&
       updatedLanes,
       suspendedRetryLanes,
       exitStatus,
+      suspendedState,
       suspendedCommitReason,
       completedRenderStartTime,
       completedRenderEndTime
@@ -19532,10 +19536,10 @@ __DEV__ &&
     (function () {
       var internals = {
         bundleType: 1,
-        version: "19.2.0-www-modern-ae22247d-20250915",
+        version: "19.2.0-www-modern-5d49b2b7-20250915",
         rendererPackageName: "react-art",
         currentDispatcherRef: ReactSharedInternals,
-        reconcilerVersion: "19.2.0-www-modern-ae22247d-20250915"
+        reconcilerVersion: "19.2.0-www-modern-5d49b2b7-20250915"
       };
       internals.overrideHookState = overrideHookState;
       internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -19569,7 +19573,7 @@ __DEV__ &&
     exports.Shape = Shape;
     exports.Surface = Surface;
     exports.Text = Text;
-    exports.version = "19.2.0-www-modern-ae22247d-20250915";
+    exports.version = "19.2.0-www-modern-5d49b2b7-20250915";
     "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
       "function" ===
         typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&