Replace raw device_memory_resource pointer in pylibcudf Cython (#16674)

Replaces a single `device_memory_resource*` in pylibcudf Cython inline C++ function with `rmm::device_async_resource_ref` to help smooth RMM refactoring effort.

Authors:
  - Mark Harris (https://github.com/harrism)

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Lawrence Mitchell (https://github.com/wence-)

URL: #16674

python/pylibcudf/pylibcudf/libcudf/interop.pxd

@@ -71,7 +71,7 @@ cdef extern from *:
     ArrowArray* to_arrow_host_raw(
       cudf::table_view const& tbl,
       rmm::cuda_stream_view stream        = cudf::get_default_stream(),
-      rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource()) {
+      rmm::device_async_resource_ref mr = rmm::mr::get_current_device_resource()) {
       // Assumes the sync event is null and the data is already on the host.
       ArrowArray *arr = new ArrowArray();
       auto device_arr = cudf::to_arrow_host(tbl, stream, mr);