compiler: prevent schedule from breaking loop over subiterators

[mloubout]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.67%. Comparing base (59b562b) to head (bef9642).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3008      +/-   ##
==========================================
+ Coverage   83.65%   83.67%   +0.02%     
==========================================
  Files         257      257              
  Lines       54630    54663      +33     
  Branches     4682     4683       +1     
==========================================
+ Hits        45698    45739      +41     
+ Misses       8118     8114       -4     
+ Partials      814      810       -4     

Flag	Coverage Δ
pytest-gpu-aomp-amdgpuX	68.47% <10.81%> (-0.07%)	⬇️
pytest-gpu-gcc-	78.30% <100.00%> (+0.01%)	⬆️
pytest-gpu-icx-	78.25% <100.00%> (+0.03%)	⬆️
pytest-gpu-nvc-nvidiaX	69.12% <10.81%> (-0.05%)	⬇️

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