Backport fixes for new analyzers in .NET 9

[bkoelman]

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• Adapted tests
• N/A: Documentation updated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.79%. Comparing base (dc8cbd2) to head (70b0e73).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1618   +/-   ##
=======================================
  Coverage   90.79%   90.79%           
=======================================
  Files         349      349           
  Lines       11314    11314           
  Branches     1849     1849           
=======================================
  Hits        10272    10272           
  Misses        682      682           
  Partials      360      360           

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