fix: 下拉站点选择器默认选择第一个

package.json

 {
   "name": "panda-xform",
-  "version": "4.5.1",
-  "description": "4.5.1 台账选择器支持清空",
+  "version": "4.5.2",
+  "description": "4.5.2 下拉站点选择器默认选择第一个",
   "keywords": [
     "panda-xform"
   ],