[compiler-rt] [rtsan] Link in proper CXX ABI library (PR #109715)

[via llvm-commits]

davidtrevelyan wrote:

Many thanks @vitalybuka - understood. Thanks everyone for the valuable inputs, I've drafted a PR for removing the `std::variant` in rtsan here: https://github.com/llvm/llvm-project/pull/109786

https://github.com/llvm/llvm-project/pull/109715