修复商品分类查看下级页码问题

src/views/pms/productCate/index.vue

@@ -125,6 +125,7 @@
     },
     methods: {
       resetParentId(){
+        this.listQuery.pageNum = 1;
         if (this.$route.query.parentId != null) {
           this.parentId = this.$route.query.parentId;
         } else {