add final_weight_volume column to the hidden by default column of OCCT report

config/locales/en.yml

@@ -2866,6 +2866,7 @@ See the %{link} to find out more about %{sitename}'s features and to start using
   report_header_delivery_postcode: Delivery Postcode
   report_header_bulk_unit_size: Bulk Unit Size
   report_header_weight: Weight
+  report_header_final_weight_volume: Final (Weight/Volume)
   report_header_height: Height
   report_header_width: Width
   report_header_depth: Depth

lib/reporting/reports/orders_and_fulfillment/order_cycle_customer_totals.rb

@@ -64,6 +64,7 @@ module Reporting
 
             order_number: proc { |line_items| line_items.first.order.number },
             date: proc { |line_items| line_items.first.order.completed_at.strftime("%F %T") },
+            final_weight_volume: proc { |line_items| line_items.sum(&:final_weight_volume) },
           }
         end
         # rubocop:enable Metrics/AbcSize
@@ -101,6 +102,14 @@ module Reporting
           }.values
         end
 
+        def default_params
+          super.merge(
+            {
+              fields_to_hide: [:final_weight_volume]
+            }
+          )
+        end
+
         private
 
         def row_header(row)