[compiler-rt] Link shared sanitizer runtime with libresolv for dn_expand (PR #116415)

[Aaron Puchert via llvm-commits]

aaronpuchert wrote:

One reason why it might have ended up in the common interceptors is this comment in `msan_interceptors.cpp`:
```c++
// FIXME: move as many interceptors as possible into
// sanitizer_common/sanitizer_common_interceptors.h
```
I have no problem with moving in the opposite direction, but maybe this comment should be removed? Maybe interceptors should only move into the common area if they're actually interesting for multiple sanitizers?

https://github.com/llvm/llvm-project/pull/116415