[cmake] Link libc++ tests against static libc++/libc++abi in CrossWinToARMLinux.cmake

Summary: Now that D72687 has landed, we can enable this setting in our cache file.

Reviewers: vvereschaka

Reviewed By: vvereschaka

Subscribers: mgorny, kristof.beyls, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76774