chore: prefer nuxt over nuxi

[danielroe]

🔗 Linked issue

❓ 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)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

this follows up on nuxt/nuxt#32237 to use nuxt command consistently now that we no longer need compatibility with nuxt 2.

[cloudflare-workers-and-pages]

Deploying nuxt-image with    Cloudflare Pages

Latest commit:	bb88819
Status:	✅  Deploy successful!
Preview URL:	https://c088d11d.nuxt-image.pages.dev
Branch Preview URL:	https://nuxi.nuxt-image.pages.dev

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.74%. Comparing base (59588e0) to head (bb88819).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1857   +/-   ##
=======================================
  Coverage   53.74%   53.74%           
=======================================
  Files          79       79           
  Lines        3753     3753           
  Branches      378      378           
=======================================
  Hits         2017     2017           
  Misses       1716     1716           
  Partials       20       20           

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[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@nuxt/image@1857

commit: bb88819