Add test for :skip_bu_error

spec/services/bulk_upload/lettings/year2024/row_parser_spec.rb

@@ -750,6 +750,18 @@ RSpec.describe BulkUpload::Lettings::Year2024::RowParser do
             expect(parser.errors[:field_15]).to eq(["You must answer tenant has seen the privacy notice"])
           end
         end
+
+        context "when there is a :skip_bu_error error" do
+          let(:managing_org) { create(:organisation, :with_old_visible_id, rent_periods: [4, 1]) }
+          let(:attributes) { valid_attributes.merge({ field_123: 3, field_128: 80 }) }
+
+          it "does not add that error" do
+            parser.valid?
+
+            expect(parser.log.errors.map(&:attribute).sort).to eql(%i[managing_organisation period])
+            expect(parser.errors.map(&:attribute)).to eql(%i[field_123])
+          end
+        end
       end
 
       describe "#validate_nulls" do