fix: 网元主机页面查询框显示空白

src/views/ne/neHost/index.vue

@@ -37,9 +37,9 @@ let dict: {
 /**查询参数 */
 let queryParams = reactive({
   /**主机类型 */
-  hostType: '',
+  hostType: undefined,
   /**分组 */
-  groupId: '',
+  groupId: undefined,
   /**名称 */
   title: '',
   /**当前页数 */
@@ -51,8 +51,8 @@ let queryParams = reactive({
 /**查询参数重置 */
 function fnQueryReset() {
   queryParams = Object.assign(queryParams, {
-    hostType: '',
-    groupId: '',
+    hostType: undefined,
+    groupId: undefined,
     title: '',
     pageNum: 1,
     pageSize: 20,