符合课程的时候带上公开状态

app/services/subjects/copy_subject_service.rb

@@ -60,7 +60,7 @@ class Subjects::CopySubjectService < ApplicationService
     shixun = stage_shixun.shixun
     to_shixun = Shixun.new
     to_shixun.attributes = shixun.attributes.dup.except('id', 'user_id', 'identifier', 'homepage_show',
-                                                        'use_scope', 'averge_star', 'myshixuns_count', 'challenges_count', "public")
+                                                        'use_scope', 'averge_star', 'myshixuns_count', 'challenges_count')
     to_shixun.identifier = Util::UUID.generate_identifier(Shixun, 8)
     to_shixun.user_id = user.id
     if laboratory