feat: Add WhatsApp profile for contact name resolution (#12123)

Fixes https://linear.app/chatwoot/issue/CW-4397/whatsapp-contacts-name-update-after-responsd-to-template

app/services/whatsapp/incoming_message_base_service.rb

@@ -92,6 +92,9 @@ class Whatsapp::IncomingMessageBaseService
 
     @contact_inbox = contact_inbox
     @contact = contact_inbox.contact
+
+    # Update existing contact name if ProfileName is available and current name is just phone number
+    update_contact_with_profile_name(contact_params)
   end
 
   def set_conversation
@@ -171,4 +174,21 @@ class Whatsapp::IncomingMessageBaseService
       )
     end
   end
+
+  def update_contact_with_profile_name(contact_params)
+    profile_name = contact_params.dig(:profile, :name)
+    return if profile_name.blank?
+    return if @contact.name == profile_name
+
+    # Only update if current name exactly matches the phone number or formatted phone number
+    return unless contact_name_matches_phone_number?
+
+    @contact.update!(name: profile_name)
+  end
+
+  def contact_name_matches_phone_number?
+    phone_number = "+#{@processed_params[:messages].first[:from]}"
+    formatted_phone_number = TelephoneNumber.parse(phone_number).international_number
+    @contact.name == phone_number || @contact.name == formatted_phone_number
+  end
 end