Fix server build entry in template

[frandiox]

The server build entry import was modified in the RR7 upgrade PR to be a dynamic import. I'm not sure why since it works as a static import as well. I've excluded this from ESLint to fix the errors.

🔴 Using a dynamic import means Vite needs to process your app code at runtime during the first request from your browser, which delays page rendering by a couple of seconds (you see a blank page for a while):

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🟢 While a static import can be discovered by Vite earlier and preloaded in parallel to other work before your browser even opens: