fix: report error when hints not supported

[chasingegg]

issue: #38705

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.01%. Comparing base (636e107) to head (7d6298e).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #38717      +/-   ##
==========================================
- Coverage   81.03%   81.01%   -0.03%     
==========================================
  Files        1380     1380              
  Lines      195154   195157       +3     
==========================================
- Hits       158145   158108      -37     
- Misses      31438    31461      +23     
- Partials     5571     5588      +17     

Components	Coverage Δ
Client	78.26% <ø> (ø)
Core	69.34% <100.00%> (+<0.01%)	⬆️
Go	82.99% <ø> (-0.03%)	⬇️

Files with missing lines	Coverage Δ
internal/core/src/query/PlanProto.cpp	90.37% <100.00%> (+0.09%)	⬆️

... and 24 files with indirect coverage changes