fix: filter draft files in production

[farnabaz]

🔗 Linked issue

resolves #1523 #2621

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[cloudflare-workers-and-pages]

Deploying nuxt-content with    Cloudflare Pages

Latest commit:	ed85c16
Status:	✅  Deploy successful!
Preview URL:	https://698edaa2.nuxt-content-1il.pages.dev
Branch Preview URL:	https://fix-draft-production.nuxt-content-1il.pages.dev

View logs

[duncandejong]

@farnabaz is this filtering of drafts fixed in document mode?

Example of my frontmatter:

title: "Case Study 1"
description: "Case study 1 about building your first API"
draft: true (Does NOT work)
_draft: true (DOES work)
slug: "case-study-1"
img: "/images/resources/case-studies/company-logo.png"
layout: article