是否国家的去除默认值

@@ -49,7 +49,7 @@
             <el-col :lg="18">
               <div class="panel border">
                 <div class="panel-header ">
-                  <h3 class="panel-title" v-if="language==0">可参与报名的项目 <span>已报项目在下方查看</span></h3>
+                  <h3 class="panel-title" v-if="language==0">可参与报名的项目 <span v-if="signInfoList.length>0">已报项目在下方查看</span></h3>
                   <h3 class="panel-title" v-else>Search Events</h3>
                   <div class="fr">
                     <el-input size="small" v-model="projectQuery.name" :prefix-icon="Search" @change="getProjectList"

@@ -145,7 +145,7 @@ const props = defineProps({
 })
 const data = reactive({
   form: {
-    is: '0'
+    is: ''
   },
   loading: false,
   countryList: [],