[compiler-rt] [asan][test][MSVC] Disabling test on MSVC x86 because of optimized builds (PR #125871)

[Ben Langmuir via llvm-commits]

https://github.com/benlangmuir commented:

It seems surprising that this would fail but `compiler-rt/test/asan/TestCases/suppressions-function.cpp` would pass.  Do we know why this fails? It would be good to have a comment like we do for Darwin.  

https://github.com/llvm/llvm-project/pull/125871