`webpackPrefetch: true` magic comment doesn't work in next v15.0.3

### Link to the code that reproduces this issue https://github.com/gavrilikhin-d/repro ### To Reproduce Test prefetching in production mode 1. ```bash npm install npm run build npm run start 2. Open http://localhost:3000 3. Open the Network tab in the browser's developer tools 4. Click on the "Load Dynamic Component" 5. See no prefetching happening ### Current vs. Expected behavior Prefetching should work ### Provide environment information ```bash Operating System: Platform: darwin Arch: arm64 Version: Darwin Kernel Version 24.1.0: Thu Oct 10 21:05:14 PDT 2024; root:xnu-11215.41.3~2/RELEASE_ARM64_T8103 Available memory (MB): 8192 Available CPU cores: 8 Binaries: Node: 22.9.0 npm: 10.8.3 Yarn: 1.22.22 pnpm: N/A Relevant Packages: next: 15.0.3 // Latest available version is detected (15.0.3). eslint-config-next: N/A react: 19.0.0-rc-66855b96-20241106 react-dom: 19.0.0-rc-66855b96-20241106 typescript: 5.6.3 Next.js Config: output: N/A ``` ### Which area(s) are affected? (Select all that apply) Lazy Loading, Webpack ### Which stage(s) are affected? (Select all that apply) next build (local), next start (local) ### Additional context Broken since `15.0.3-canary.7`, because on `15.0.3-canary.6` it works