compiler: restrict nested parallelism to supported compilers (intel)

[mloubout]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 86.04651% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.24%. Comparing base (6ec492d) to head (43cd78b).

Files with missing lines	Patch %	Lines
tests/test_dle.py	86.95%	2 Missing and 1 partial ⚠️
devito/passes/iet/languages/openmp.py	75.00%	1 Missing and 1 partial ⚠️
devito/passes/iet/parpragma.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2923      +/-   ##
==========================================
- Coverage   83.38%   83.24%   -0.14%     
==========================================
  Files         248      248              
  Lines       51685    51725      +40     
  Branches     4460     4465       +5     
==========================================
- Hits        43100    43061      -39     
- Misses       7831     7908      +77     
- Partials      754      756       +2     

Flag	Coverage Δ
pytest-gpu-aomp-amdgpuX	68.69% <35.00%> (-0.01%)	⬇️
pytest-gpu-gcc-	77.96% <81.39%> (-0.06%)	⬇️
pytest-gpu-icx-	43.11% <25.58%> (-34.52%)	⬇️
pytest-gpu-nvc-nvidiaX	69.22% <35.00%> (-0.03%)	⬇️

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