fix: 样式修改

package.json

 {
   "name": "panda-xform",
-  "version": "4.2.3",
-  "description": "4.2.3 下拉属性的元素修改",
+  "version": "4.2.4",
+  "description": "4.2.4 样式修改",
   "keywords": [
     "panda-xform"
   ],

src/main.less

@@ -33,6 +33,7 @@ body #app {
     height: 100%;
     .@{ant-prefix}-spin-container {
       height: 100%;
+      overflow: auto;
     }
   }
   .@{ant-prefix}-spin-spinning {