refactor: uninstall node-fetch which is built-in since node 18

[mcmxcdev]

Pre-flight Checklist

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• I have read the Contributing Guidelines for this project.
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Description of Change

• uninstall node-fetch from package.json
• remove fetch import from translation-helpers.ts
• remove fetch import from RecipeController and UserController

Motivation and Context

https://developer.mozilla.org/en-US/docs/Web/API/fetch#browser_compatibility is available since node 18, so we don't need the dependency anymore.

I verified by playing around with the translation functionality that the native fetch API works properly.

Screenshots

Checklist

• My pull request is properly named
• The changes respect the code style of the project (pnpm prepare-code)
• pnpm test passes
• I tested/previewed my changes locally

Release Notes

[SpecialAro]

LGTM!