## What changed
- Configure x86_64 Windows MSVC `rules_rs` toolchains to use the bundled
`rust-lld` linker.
- Make `rules_rust` select the configured direct linker for that target unless
the toolchain explicitly prefers the C compiler driver.
GitOrigin-RevId: 941a1ca42b931cbb9e1c2d68300b8a82a5250be8