fix: setting details

[cugu]

Return nil instead of an empty object when marshalling optional data.

Fixes #1167

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.14%. Comparing base (5f37e8a) to head (d38e651).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1175      +/-   ##
==========================================
+ Coverage   70.10%   70.14%   +0.03%     
==========================================
  Files          58       58              
  Lines        8236     8236              
==========================================
+ Hits         5774     5777       +3     
+ Misses       2462     2459       -3     

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.