fix: support useHead outside of components

[BobbieGoede]

🔗 Linked issue

• Resolves i18n call usehead function outside the setup function #815

❓ 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 changes the wrapper/implementation of useHead so that lifecycle hooks are only used when ran from within a component which matches the original useHead behavior.

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.84%. Comparing base (506b5a4) to head (bd19579).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/runtime/composables/head.ts	0.00%	37 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #825      +/-   ##
==========================================
- Coverage   49.04%   48.84%   -0.21%     
==========================================
  Files          12       12              
  Lines         732      735       +3     
  Branches       53       53              
==========================================
  Hits          359      359              
- Misses        373      376       +3     

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