Land enableClientRenderFallbackOnTextMismatch for www (#28538)

This is landed, we can hardcode the flag

Author: rickhanlonii

packages/shared/forks/ReactFeatureFlags.www-dynamic.js

@@ -29,7 +29,6 @@ export const enableUseDeferredValueInitialArg = __VARIANT__;
 export const enableRenderableContext = __VARIANT__;
 export const useModernStrictMode = __VARIANT__;
 export const enableRefAsProp = __VARIANT__;
-export const enableClientRenderFallbackOnTextMismatch = __VARIANT__;
 export const enableRetryLaneExpiration = __VARIANT__;
 export const retryLaneExpirationMs = 5000;
 export const syncLaneExpirationMs = 250;

packages/shared/forks/ReactFeatureFlags.www.js

@@ -38,7 +38,6 @@ export const {
   enableRenderableContext,
   useModernStrictMode,
   enableRefAsProp,
-  enableClientRenderFallbackOnTextMismatch,
 } = dynamicFeatureFlags;
 
 // On WWW, __EXPERIMENTAL__ is used for a new modern build.
@@ -49,7 +48,7 @@ export const enableProfilerTimer = __PROFILE__;
 export const enableProfilerCommitHooks = __PROFILE__;
 export const enableProfilerNestedUpdatePhase = __PROFILE__;
 export const enableUpdaterTracking = __PROFILE__;
-
+export const enableClientRenderFallbackOnTextMismatch = true;
 export const enableSuspenseAvoidThisFallback = true;
 export const enableSuspenseAvoidThisFallbackFizz = false;