Auto merge of rust-lang#90495 - lnicola:freebsd-kvm, r=Mark-Simulacrum

Pull in `libkvm` on FreeBSD

This is needed when updating `libc` after rust-lang/libc#2451.

Spotted in rust-lang#90464 where it caused `rust-analyzer` to fail to link.

Similar to rust-lang#88676.

src/ci/docker/scripts/freebsd-toolchain.sh

@@ -53,7 +53,7 @@ files_to_extract=(
 for lib in c cxxrt gcc_s m thr util; do
   files_to_extract=("${files_to_extract[@]}" "./lib/lib${lib}.*" "./usr/lib/lib${lib}.*")
 done
-for lib in c++ c_nonshared compiler_rt execinfo gcc pthread rt ssp_nonshared procstat; do
+for lib in c++ c_nonshared compiler_rt execinfo gcc pthread rt ssp_nonshared procstat kvm; do
   files_to_extract=("${files_to_extract[@]}" "./usr/lib/lib${lib}.*")
 done