fix: make sure system message is present in reflection call

[ekzhu]

Resolves #5919

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.56%. Comparing base (41e7e85) to head (3dc5191).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5926      +/-   ##
==========================================
+ Coverage   71.13%   75.56%   +4.43%     
==========================================
  Files         297      191     -106     
  Lines       16250    13093    -3157     
  Branches      408        0     -408     
==========================================
- Hits        11559     9894    -1665     
+ Misses       4416     3199    -1217     
+ Partials      275        0     -275     

Flag	Coverage Δ
unittests	75.56% <100.00%> (+4.43%)	⬆️

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