fix: store contact CSV import company under additional_attributes[:company_name]

The rest of the product reads the contact company from
additional_attributes[:company_name] (Contact.order_on_company_name scope,
ContactInfo.vue, ContactForm.vue, ContactSortMenu, widget contacts store).
DataImport::ContactManager was writing to additional_attributes[:company]
instead, so imported values silently never appeared in the Company field.

- Write to additional_attributes[:company_name]
- Accept either `company` or `company_name` CSV columns so existing
  import templates keep working (`company_name` wins when both are set).
- Update the existing specs to assert against company_name and add a
  new spec that verifies the company_name CSV column path.

Closes #14096
Revives the never-fully-resolved #9907.

Co-Authored-By: Claude <noreply@anthropic.com>

app/services/data_import/contact_manager.rb

@@ -61,7 +61,11 @@ class DataImport::ContactManager
   def update_contact_attributes(params, contact)
     contact.name = params[:name] if params[:name].present?
     contact.additional_attributes ||= {}
-    contact.additional_attributes[:company] = params[:company] if params[:company].present?
+    # The rest of the app (contact model scope, serializer, dashboard UI) reads
+    # `additional_attributes[:company_name]`. Accept either `company` or
+    # `company_name` from the CSV so older import templates keep working.
+    company_name = params[:company_name].presence || params[:company].presence
+    contact.additional_attributes[:company_name] = company_name if company_name.present?
     contact.additional_attributes[:city] = params[:city] if params[:city].present?
     contact.assign_attributes(custom_attributes: contact.custom_attributes.merge(params.except(:identifier, :email, :name, :phone_number)))
   end

spec/jobs/data_import_job_spec.rb

@@ -41,7 +41,18 @@ RSpec.describe DataImportJob do
         expect(data_import.reload.processed_records).to eq(csv_length)
         contact = Contact.find_by(phone_number: '+918080808080')
         expect(contact).to be_truthy
-        expect(contact['additional_attributes']['company']).to eq('My Company Name')
+        expect(contact['additional_attributes']['company_name']).to eq('My Company Name')
+      end
+
+      it 'stores the company_name CSV column into additional_attributes[:company_name]' do
+        csv_data = [
+          %w[id name email phone_number company_name],
+          ['1', 'Clarice Uzzell', 'cuzzell0@mozilla.org', '918080808080', 'Acmecorp']
+        ]
+        import = create(:data_import, import_file: generate_csv_file(csv_data))
+        described_class.perform_now(import)
+        contact = Contact.find_by(phone_number: '+918080808080')
+        expect(contact.additional_attributes['company_name']).to eq('Acmecorp')
       end
     end
 
@@ -118,7 +129,7 @@ RSpec.describe DataImportJob do
           expect(contact).to be_present
           expect(contact.phone_number).to eq("+#{csv_data[0]['phone_number']}")
           expect(contact.name).to eq((csv_data[0]['name']).to_s)
-          expect(contact.additional_attributes['company']).to eq((csv_data[0]['company']).to_s)
+          expect(contact.additional_attributes['company_name']).to eq((csv_data[0]['company']).to_s)
         end
       end
 
@@ -135,7 +146,7 @@ RSpec.describe DataImportJob do
           expect(contact).to be_present
           expect(contact.email).to eq(csv_data[0]['email'])
           expect(contact.name).to eq((csv_data[0]['name']).to_s)
-          expect(contact.additional_attributes['company']).to eq((csv_data[0]['company']).to_s)
+          expect(contact.additional_attributes['company_name']).to eq((csv_data[0]['company']).to_s)
         end
       end