pm link_index 增加倒序排序

app/controllers/api/pm/issues_controller.rb

@@ -32,7 +32,7 @@ class Api::Pm::IssuesController < Api::Pm::BaseController
     object_issues = Issue.where(
       pm_project_id: params[:pm_project_id],
       pm_issue_type: pm_issue_type
-    ).where.not(id: not_join_id)
+    ).where.not(id: not_join_id).order(updated_on: :desc)
 
     object_issues = object_issues.where(root_id: nil, child_count: 0) if params[:issue_filter_type] == 'leaf_issue'
     @issues = kaminari_paginate(object_issues)