Revert server action optimization (#69925)

Author: huozhi

packages/next/src/build/webpack/plugins/flight-client-entry-plugin.ts

@@ -939,7 +939,7 @@ export const defaultConfig: NextConfig = {
         : false,
     webpackBuildWorker: undefined,
     missingSuspenseWithCSRBailout: true,
-    optimizeServerReact: false,
+    optimizeServerReact: true,
     useEarlyImport: false,
     staleTimes: {
       dynamic: 30,