refactor(tvix/store): use composition in tvix_store crate

Change-Id: Ie6290b296baba2b987f1a61c9bb4c78549ac11f1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11983
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: yuka <yuka@yuka.dev>
Tested-by: BuildkiteCI

tvix/cli/src/lib.rs

@@ -60,7 +60,7 @@ pub fn init_io_handle(tokio_runtime: &tokio::runtime::Runtime, args: &Args) -> R
     Rc::new(TvixStoreIO::new(
         blob_service.clone(),
         directory_service.clone(),
-        path_info_service.into(),
+        path_info_service,
         nar_calculation_service.into(),
         build_service.into(),
         tokio_runtime.handle().clone(),