IntelLLVM: Fix C/C++ standard level flags on Windows
In !5594 (merged) we accidentally left out activation of the C/C++ standard level selection logic when IntelLLVM is targeting the MSVC ABI.
Fixes: #22388 (closed)
Backport: release
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In !5594 (merged) we accidentally left out activation of the C/C++ standard level selection logic when IntelLLVM is targeting the MSVC ABI.
Fixes: #22388 (closed)
Backport: release