fix(cms): 优化文章查询排序逻辑

- 在CmsArticleMapper.xml的分页和查询全部SQL语句中添加排序条件
- 按推荐度降序、排序号升序、创建时间降序排序文章列表
- 移除CmsArticleServiceImpl中重复的默认排序设置逻辑

src/main/java/com/gxwebsoft/cms/mapper/xml/CmsArticleMapper.xml

@@ -152,11 +152,13 @@
     <!-- 分页查询 -->
     <select id="selectPageRel" resultType="com.gxwebsoft.cms.entity.CmsArticle">
         <include refid="selectSql"></include>
+        ORDER BY a.recommend DESC, a.sort_number ASC, a.create_time DESC
     </select>
 
     <!-- 查询全部 -->
     <select id="selectListRel" resultType="com.gxwebsoft.cms.entity.CmsArticle">
         <include refid="selectSql"></include>
+        ORDER BY a.recommend DESC, a.sort_number ASC, a.create_time DESC
     </select>
 
     <select id="selectListAllRel" resultType="com.gxwebsoft.cms.entity.CmsArticle">

src/main/java/com/gxwebsoft/cms/service/impl/CmsArticleServiceImpl.java

@@ -65,7 +65,6 @@ public class CmsArticleServiceImpl extends ServiceImpl<CmsArticleMapper, CmsArti
       }
     }
     PageParam<CmsArticle, CmsArticleParam> page = new PageParam<>(param);
-    page.setDefaultOrder("sort_number asc,create_time desc");
     List<CmsArticle> list = baseMapper.selectPageRel(page, param);
 
     return new PageResult<>(list, page.getTotal());