[test] Make enableSuspenseyImages dynamic (#36274)

Author: eps1lon

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

@@ -29,6 +29,7 @@ export const enableSchedulingProfiler: boolean = __VARIANT__;
 export const enableInfiniteRenderLoopDetection: boolean = __VARIANT__;
 
 export const enableFastAddPropertiesInDiffing: boolean = __VARIANT__;
+export const enableSuspenseyImages: boolean = __VARIANT__;
 export const enableViewTransition: boolean = __VARIANT__;
 export const enableScrollEndPolyfill: boolean = __VARIANT__;
 export const enableFragmentRefs: boolean = __VARIANT__;

packages/shared/forks/ReactFeatureFlags.www.js

@@ -27,6 +27,7 @@ export const {
   retryLaneExpirationMs,
   syncLaneExpirationMs,
   transitionLaneExpirationMs,
+  enableSuspenseyImages,
   enableViewTransition,
   enableScrollEndPolyfill,
   enableFragmentRefs,
@@ -102,7 +103,6 @@ export const enableViewTransitionForPersistenceMode: boolean = false;
 
 export const enableGestureTransition: boolean = false;
 
-export const enableSuspenseyImages: boolean = false;
 export const enableFizzBlockingRender: boolean = true;
 export const enableSrcObject: boolean = false;
 export const enableHydrationChangeEvent: boolean = false;