fix: prevent hydration mismatch in <NuxtImg>

[DamianGlowala]

🔗 Linked issue

resolves #1443

❓ 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

Renames _attrs to imgAttrs in <NuxtImg> component.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.04%. Comparing base (62b4387) to head (93b7c1a).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1445   +/-   ##
=======================================
  Coverage   62.04%   62.04%           
=======================================
  Files          79       79           
  Lines        3602     3602           
  Branches      391      390    -1     
=======================================
  Hits         2235     2235           
  Misses       1337     1337           
  Partials       30       30           

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