fix: avoid doubly-bundling runtime types

[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 like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

At the moment we are bundling two copies of various runtime types, one in the main nitropack index.d.ts and another in the runtime directory. The danger with this is that types can get out of sync when extending one of those two.

📝 Checklist

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

[pi0]

(I am on phone trusting you already tested build)

[pi0]

Can you please check failing ci?

[codecov]

Codecov Report

Merging #1334 (2435c08) into main (0145f01) will decrease coverage by 0.10%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1334      +/-   ##
==========================================
- Coverage   76.74%   76.64%   -0.10%     
==========================================
  Files          71       70       -1     
  Lines        7181     7151      -30     
  Branches      710      710              
==========================================
- Hits         5511     5481      -30     
  Misses       1669     1669              
  Partials        1        1              

Impacted Files	Coverage Δ
src/types/index.ts	100.00% <ø> (ø)

... and 1 file with indirect coverage changes

[danielroe]

previewing this and #1333 in nuxt/nuxt#21683.

we can confirm everything is passing before merging/releasing