Parquet writer column_size() should return a size_t (#12870)

Fixes #12867.

Bug introduced in #12685. A calculation of total bytes in a column was returned in a 32-bit `size_type` rather than 64-bit `size_t` leading to overflow for tables with many millions of rows.

Authors:
  - Ed Seidl (https://github.com/etseidl)
  - Vukasin Milovanovic (https://github.com/vuule)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - Vukasin Milovanovic (https://github.com/vuule)
  - Karthikeyan (https://github.com/karthikeyann)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

URL: #12870

cpp/src/io/parquet/writer_impl.cu

@@ -87,7 +87,7 @@ parquet::Compression to_parquet_compression(compression_type compression)
   }
 }
 
-size_type column_size(column_view const& column, rmm::cuda_stream_view stream)
+size_t column_size(column_view const& column, rmm::cuda_stream_view stream)
 {
   if (column.size() == 0) { return 0; }
 
@@ -99,7 +99,7 @@ size_type column_size(column_view const& column, rmm::cuda_stream_view stream)
            cudf::detail::get_value<size_type>(scol.offsets(), 0, stream);
   } else if (column.type().id() == type_id::STRUCT) {
     auto const scol = structs_column_view(column);
-    size_type ret   = 0;
+    size_t ret      = 0;
     for (int i = 0; i < scol.num_children(); i++) {
       ret += column_size(scol.get_sliced_child(i), stream);
     }