[TL-4958] fix finished career members csv (#764)

* fix finished career members csv

* fix last step date condition

app/controllers/web/admin/career_member_users_controller.rb

@@ -138,16 +138,18 @@ def prepare_data(career_members)
   end
 
   def export_users(scope, file_prefix: '')
-    headers = %i[full_name email career_name current_step progress last_step_finished_at state]
+    headers = %i[full_name email career_name start_date finished_date current_step progress last_step_finished_or_active_at state]
     send_file_headers!(filename: "#{file_prefix}-#{Time.zone.today}.csv")
     self.response_body = generate_csv(scope, headers) do |member|
       [
         member.user.full_name,
         member.user.email,
         member.career.name,
+        member.created_at,
+        member.finished_at,
         member.current_item&.career_step&.name,
         member.progress_by_finished_steps,
-        member.career_step_members.active.order(created_at: :asc).last&.created_at,
+        member.career_step_members.finished.order(created_at: :asc).last&.created_at || member.career_step_members.active.order(created_at: :asc).last&.created_at,
         member.aasm(:state).human_state
       ]
     end