Enable suspenseCallback on React Native (#29210)

## Summary

suspenseCallback feature has proved to be useful for FB Web. Let's look
at enabling the feature for the React Native build.


## How did you test this change?

Will sync the react changes with a React Native build and will verify
that performance logging is correctly notified of suspense promises
during the suspense callback.

packages/react-reconciler/src/__tests__/ReactSuspenseCallback-test.js

@@ -46,7 +46,7 @@ describe('ReactSuspense', () => {
 
   // Warning don't fire in production, so this test passes in prod even if
   // the suspenseCallback feature is not enabled
-  // @gate www || !__DEV__
+  // @gate enableSuspenseCallback || !__DEV__
   it('check type', async () => {
     const {PromiseComp} = createThenable();
 
@@ -71,7 +71,7 @@ describe('ReactSuspense', () => {
     await expect(async () => await waitForAll([])).toErrorDev([]);
   });
 
-  // @gate www
+  // @gate enableSuspenseCallback
   it('1 then 0 suspense callback', async () => {
     const {promise, resolve, PromiseComp} = createThenable();
 
@@ -98,7 +98,7 @@ describe('ReactSuspense', () => {
     expect(ops).toEqual([]);
   });
 
-  // @gate www
+  // @gate enableSuspenseCallback
   it('2 then 1 then 0 suspense callback', async () => {
     const {
       promise: promise1,
@@ -145,7 +145,7 @@ describe('ReactSuspense', () => {
     expect(ops).toEqual([]);
   });
 
-  // @gate www
+  // @gate enableSuspenseCallback
   it('nested suspense promises are reported only for their tier', async () => {
     const {promise, PromiseComp} = createThenable();
 
@@ -177,7 +177,7 @@ describe('ReactSuspense', () => {
     expect(ops2).toEqual([new Set([promise])]);
   });
 
-  // @gate www
+  // @gate enableSuspenseCallback
   it('competing suspense promises', async () => {
     const {
       promise: promise1,

packages/shared/forks/ReactFeatureFlags.native-fb.js

@@ -80,7 +80,7 @@ export const enableScopeAPI = false;
 export const enableServerComponentLogs = true;
 export const enableSuspenseAvoidThisFallback = false;
 export const enableSuspenseAvoidThisFallbackFizz = false;
-export const enableSuspenseCallback = false;
+export const enableSuspenseCallback = true;
 export const enableTaint = true;
 export const enableTransitionTracing = false;
 export const enableTrustedTypesIntegration = false;