Fix fullstack serialization order for adjacent components (#4600)

* fix serialization order

* add regression test

* split out test into a seperate package

* revert logging

* change order

* opinions on structure

* small wait in hydration order test

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/playwright-tests/fullstack.spec.js

@@ -104,10 +104,10 @@ test("assets cache correctly", async ({ page }) => {
 
   // Wait for the nested asset image to be loaded
   const nestedAssetImageResponse = await nestedAssetImageFuture;
-  console.log(
-    "Nested Asset Image Response:",
-    nestedAssetImageResponse
-  );
+  // console.log(
+  //   "Nested Asset Image Response:",
+  //   nestedAssetImageResponse
+  // );
   // Make sure the nested asset image cache control header does not contain immutable
   const nestedAssetCacheControl =
     nestedAssetImageResponse.headers()["cache-control"];