[compiler-rt] [ASan][Windows] Honor asan config flags on windows when set through the user function (PR #122990)

[David Justo via llvm-commits]

davidmrdavid wrote:

I'll mark this as 'draft until I add this test: https://github.com/llvm/llvm-project/pull/122990#discussion_r1929391928

https://github.com/llvm/llvm-project/pull/122990