fix app_page / rscData prop

Author: justinadkins

packages/cache-handler/src/handlers/redis-strings.ts

@@ -91,7 +91,6 @@ export default function createHandler({
         },
         async set(key, cacheHandlerValue) {
             assertClientIsReady();
-
             // XXX: NextJS 15 hack to get metadata files loading
             if (cacheHandlerValue.value?.kind === "ROUTE") {
                 console.warn("The cache value kind is 'ROUTE'. This is not compatible with Next15, changing to 'APP_ROUTE'");

packages/cache-handler/src/instrumentation/register-initial-cache.ts

@@ -266,9 +266,9 @@ export async function registerInitialCache(CacheHandler: CacheHandlerType, optio
                 cachePath,
                 {
                     // @ts-expect-error
-                    kind: 'PAGE',
+                    kind: isAppRouter ? 'APP_PAGE' : "PAGE",
                     html,
-                    pageData,
+                    [isAppRouter ? 'rscData' : 'pageData']: pageData,
                     postponed: meta?.postponed,
                     headers: meta?.headers,
                     status: meta?.status,