用map方法编辑集合的时候，集合中存在关联查询结果是相同的时候，进行修改回出现修改A会影响B的情况
例如
代码逻辑
//以下数据遍历第一次的时候，修改$item新增属性node_type,会影响第二次编辑的$item中也会node_type属性$collect->map(function($item){ $item->node_type=$item->type;});这里是数据
dump($collect->toArray());//输出结构如下 array:2 [ 0 => array:9 [ "id" => 5 "role_id" => 4 "node_id" => 247 "cable_node_id" => 9 "optical_cable_id" => 116 "created_at" => "2020-01-14 16:52:36" "updated_at" => "2020-01-14 16:52:36" "cable_node" => array:9 [ "id" => 9 "name" => "节点3发达" "status" => 1 "parent_id" => 0 "type" => 1 "role_id" => 4 "created_at" => "2019-11-07 19:00:33" "updated_at" => "2019-11-30 15:03:00" ] ] 1 => array:9 [ "id" => 7 "role_id" => 4 "node_id" => 146 "cable_node_id" => 9 "optical_cable_id" => 116 "created_at" => "2020-01-15 10:32:49" "updated_at" => "2020-01-15 10:32:49" "cable_node" => array:9 [ "id" => 9 "name" => "节点3发达" "status" => 1 "parent_id" => 0 "type" => 1 "role_id" => 4 "created_at" => "2019-11-07 19:00:33" "updated_at" => "2019-11-30 15:03:00" ] ]]