add article sort id desc

app/service/course/v4/institution.js

@@ -835,7 +835,7 @@ class InstitutionSubService extends Service {
     const limit = Number(input.limit) || 2;
     const offset = (page - 1) * limit;
 
-    const articles = await ctx.classModel.V4.CourseArticle.findAndCountAll({ where: { is_recommend: 1, status: 'online', is_deleted: 0 }, order: [[ 'sort', 'asc' ]], limit, offset });
+    const articles = await ctx.classModel.V4.CourseArticle.findAndCountAll({ where: { is_recommend: 1, status: 'online', is_deleted: 0 }, order: [[ 'sort', 'asc' ], [ 'id', 'desc' ]], limit, offset });
     // 获取分类
     const cats = await ctx.classModel.V4.CourseCat.findAll({ where: { status: 'online', is_deleted: 0 } });
     const catMap = new Map();