Enable the enableEagerAlternateStateNodeCleanup Feature Flag (#33447)

Enables the `enableEagerAlternateStateNodeCleanup` feature flag for all
variants, while maintaining the `__VARIANT__` for the internal React
Native flavor for backtesting reasons.

```
$ yarn test
```

Author: yungsters

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

@@ -49,7 +49,7 @@ export const enableSchedulingProfiler = __PROFILE__;
 export const enableComponentPerformanceTrack = false;
 export const enableScopeAPI = false;
 export const enableShallowPropDiffing = false;
-export const enableEagerAlternateStateNodeCleanup = false;
+export const enableEagerAlternateStateNodeCleanup = true;
 export const enableSuspenseAvoidThisFallback = false;
 export const enableSuspenseCallback = false;
 export const enableTaint = true;

packages/shared/forks/ReactFeatureFlags.test-renderer.js

@@ -65,7 +65,7 @@ export const enableShallowPropDiffing = false;
 export const enableSiblingPrerendering = true;
 
 export const enableUseEffectCRUDOverload = false;
-export const enableEagerAlternateStateNodeCleanup = false;
+export const enableEagerAlternateStateNodeCleanup = true;
 
 export const enableYieldingBeforePassive = true;
 

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

@@ -47,7 +47,7 @@ export const enableSchedulingProfiler = __PROFILE__;
 export const enableComponentPerformanceTrack = false;
 export const enableScopeAPI = false;
 export const enableShallowPropDiffing = false;
-export const enableEagerAlternateStateNodeCleanup = false;
+export const enableEagerAlternateStateNodeCleanup = true;
 export const enableSuspenseAvoidThisFallback = false;
 export const enableSuspenseCallback = false;
 export const enableTaint = true;

packages/shared/forks/ReactFeatureFlags.test-renderer.www.js

@@ -74,7 +74,7 @@ export const enableShallowPropDiffing = false;
 export const enableSiblingPrerendering = true;
 
 export const enableUseEffectCRUDOverload = false;
-export const enableEagerAlternateStateNodeCleanup = false;
+export const enableEagerAlternateStateNodeCleanup = true;
 
 export const enableHydrationLaneScheduling = true;
 

packages/shared/forks/ReactFeatureFlags.www.js

@@ -110,7 +110,7 @@ export const disableLegacyMode = true;
 
 export const enableShallowPropDiffing = false;
 
-export const enableEagerAlternateStateNodeCleanup = false;
+export const enableEagerAlternateStateNodeCleanup = true;
 
 export const enableLazyPublicInstanceInFabric = false;