[llvm-branch-commits] [libcxx] [libc++] Cherry-pick the disabling of modules tests onto release/18.x (PR #85247)

[Louis Dionne via llvm-branch-commits]

ldionne wrote:

Is the fix only to switch to 18.1 in the cmake? I can do that if that's it, I just don't fully understand the situation w/ clang tidy ODR violations since you were the one to make these changes

https://github.com/llvm/llvm-project/pull/85247