fix(pinia-orm): Relations with same entity and different namespace were wrong

[CodeDredd]

🔗 Linked issue

closes #1740

❓ 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.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.71%. Comparing base (676ad48) to head (6f1f570).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1834      +/-   ##
==========================================
+ Coverage   99.70%   99.71%   +0.01%     
==========================================
  Files          88       88              
  Lines        6001     6027      +26     
  Branches      510      511       +1     
==========================================
+ Hits         5983     6010      +27     
+ Misses         14       13       -1     
  Partials        4        4              

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