fix(wa): 子tab去掉v-if(只在groups时显示的bug→应始终显示)

Co-Authored-By: Claude <noreply@anthropic.com>

yunkes/src/views/CustomerList.vue

@@ -580,7 +580,7 @@ onMounted(() => {
          ============================================================ -->
     <!-- WA 子 tab:好友列表 | 群列表(对齐云客) -->
     <template v-if="activeTab === 'whatsapp'">
-      <div v-if="waSubTab === 'groups'" class="yk-wa-subtab" style="margin-bottom: 12px">
+      <div class="yk-wa-subtab" style="margin-bottom: 12px">
         <el-radio-group v-model="waSubTab" size="small" @change="onWaSubTabChange">
           <el-radio-button value="friends">好友列表</el-radio-button>
           <el-radio-button value="groups">群列表</el-radio-button>