chore(config): remove pull-down refresh from approve list page

- Remove enablePullDownRefresh configuration from approve list page
- Simplify page styling configuration by removing unnecessary refresh behavior
- Streamline pages.json configuration for cleaner maintenance

pages.json

@@ -22,8 +22,7 @@
         {
             "path": "pages/approve/index",
             "style": {
-                "navigationBarTitleText": "审批列表",
-                "enablePullDownRefresh": true
+                "navigationBarTitleText": "审批列表"
             }
         },
         {