[OpenMP] Fix spirv_variant_match test after 7d0bf88581ff (#36223)
Fix Clang::OpenMP/spirv_variant_match.cpp test that broke after commit
7d0bf88581ff which changed OpenMP variant arch matching to use
Triple::parseArch instead of getArchTypeForLLVMName.
Sync the tests to upstream version to fix the failures.
Fixes: CMPLRLLVM-74596
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
