revert client head search

Author: huozhi

Diff for: packages/next/src/client/components/router-reducer/reducers/find-head-in-cache.ts

@@ -20,29 +20,7 @@ function findHeadInCacheImpl(
     return [cache, keyPrefix]
   }
 
-  // First try the 'children' parallel route if it exists
-  // when starting from the "root", this corresponds with the main page component
-  if (parallelRoutes.children) {
-    const [segment, childParallelRoutes] = parallelRoutes.children
-    const childSegmentMap = cache.parallelRoutes.get('children')
-    if (childSegmentMap) {
-      const cacheKey = createRouterCacheKey(segment)
-      const cacheNode = childSegmentMap.get(cacheKey)
-      if (cacheNode) {
-        const item = findHeadInCacheImpl(
-          cacheNode,
-          childParallelRoutes,
-          keyPrefix + '/' + cacheKey
-        )
-        if (item) return item
-      }
-    }
-  }
-
-  // if we didn't find metadata in the page slot, check the other parallel routes
   for (const key in parallelRoutes) {
-    if (key === 'children') continue // already checked above
-
     const [segment, childParallelRoutes] = parallelRoutes[key]
     const childSegmentMap = cache.parallelRoutes.get(key)
     if (!childSegmentMap) {

Diff for: packages/next/src/server/app-render/app-render.tsx

@@ -500,13 +500,6 @@ async function generateDynamicRSCPayload(
       serveStreamingMetadata,
     })
 
-    // const { StreamingMetadata, StaticMetadata } =
-    //   createRootMetadata(() => {
-    //     return (
-
-    //     )
-    //   }, serveStreamingMetadata)
-
     flightData = (
       await walkTreeWithFlightRouterState({
         ctx,