Reuse rent_type mapping

lib/tasks/correct_rent_type_value.rake

@@ -1,13 +1,5 @@
 desc "Alter rent_type values for bulk uploaded lettings logs for 2024 where they were not mapped correctly"
 task correct_rent_type_value: :environment do
-  rent_type_detail_mapping = {
-    1 => 0,
-    2 => 1,
-    3 => 2,
-    4 => 3,
-    5 => 4,
-    6 => 5,
-  }
   affected_uploads = BulkUpload.where(log_type: "lettings", year: 2024)
   affected_uploads.each do |upload|
     upload.logs.where.not(rent_type: nil).each do |log|
@@ -15,7 +7,8 @@ task correct_rent_type_value: :environment do
       rent_type_at_upload = log.versions.length == 1 ? log.rent_type : log.versions.first.next.reify.rent_type
       next unless rent_type_at_upload == current_rent_type
 
-      log.rent_type = rent_type_detail_mapping[rent_type_at_upload]
+      new_rent_type_value = BulkUpload::Lettings::Year2024::RowParser::RENT_TYPE_BU_MAPPING[rent_type_at_upload]
+      log.rent_type = new_rent_type_value
       log.skip_update_status = true if log.status == "pending"
       if log.save
         Rails.logger.info("Log #{log.id} rent_type updated from #{rent_type_at_upload} to #{log.rent_type}")