[PATCH] rust: nova-core: Update ARef imports from sync::aref

[Alexandre Courbot]

On Wed Aug 20, 2025 at 8:28 PM JST, Shankari Anand wrote:
> Update call sites in nova-core to import `ARef`
> from `sync::aref` instead of `types`.
>
> This aligns with the ongoing effort to move `ARef` and
> `AlwaysRefCounted` to sync.
>
> Suggested-by: Benno Lossin <lossin at kernel.org>
> Link: https://github.com/Rust-for-Linux/linux/issues/1173
> Signed-off-by: Shankari Anand <shankari.ak0208 at gmail.com>

Thanks! I will push this into nova-next shortly.