Make disableSchedulerTimeoutInWorkLoop a static ff (#26497)

## Overview

There's a known infinite loop with this but we're not running an
experiment any time soon.

packages/shared/forks/ReactFeatureFlags.www.js

@@ -25,7 +25,6 @@ export const {
   enableDebugTracing,
   skipUnmountedBoundaries,
   enableUseRefAccessWarning,
-  disableSchedulerTimeoutInWorkLoop,
   enableLazyContextPropagation,
   enableUnifiedSyncLane,
   enableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay,
@@ -47,6 +46,8 @@ export const enableUpdaterTracking = __PROFILE__;
 export const createRootStrictEffectsByDefault = false;
 export const enableSuspenseAvoidThisFallback = true;
 export const enableSuspenseAvoidThisFallbackFizz = false;
+
+export const disableSchedulerTimeoutInWorkLoop = false;
 export const enableCPUSuspense = true;
 export const enableFloat = true;
 export const enableUseHook = true;