Optimizing @mui/joy package barrel imports does not work with optimizePackageImports and turbopack

### Link to the code that reproduces this issue https://github.com/PMudra/reproduction-app-optimize-package-imports-joy-ui ### To Reproduce 1. Start the aplication in dev mode and turbopack. `npm run dev -- --turbopack` 2. Open the page with your browser. 3. Inspect the loaded js modules using the "Coverage" tab of the dev tools (I am using chrome dev tools for this). ### Current vs. Expected behavior #### Example ```tsx // page.tsx import { Button } from "@mui/joy"; export default function Home() { return <Button>My button</Button>; } ``` ```ts // next.config.ts import type { NextConfig } from "next"; const nextConfig: NextConfig = { reactStrictMode: true, experimental: { optimizePackageImports: ["@mui/joy"], }, }; export default nextConfig; ``` #### Current result All modules of mui/joy seem to be loaded by the browser. Most of its functions / components are unused.  Especially the first bundle contains many unused functions of mui/joy. #### Expected behavior Only the modules that are really needed should be loaded, even though I am importing from the barrel file `@mui/joy`. The result should be similar to importing directly from `@mui/joy/Button` (non-barrel import).  In this case, there is no obvious trace of the mui/joy package because it's now way smaller and part of one of the `node_modules` chunks. So when searching for `/joy/` in the Coverage tab, I'd expect to only find some results for the `Button` component and its direct dependencies. ### Provide environment information ```bash Operating System: Platform: linux Arch: x64 Version: #14-Ubuntu SMP PREEMPT_DYNAMIC Sat Nov 30 23:51:51 UTC 2024 Available memory (MB): 63439 Available CPU cores: 16 Binaries: Node: 22.13.0 npm: 10.9.2 Yarn: N/A pnpm: 10.0.0 Relevant Packages: next: 15.2.0-canary.18 // Late…