fix(接口测试): 修复场景-参数设置-前置返回-请求详情，显示原始接口不存在的问题

--bug=1018083 --user=宋天阳 【接口测试】场景-参数设置-前置返回-请求详情，显示原始接口不存在
https://www.tapd.cn/55049933/s/1267809

api-test/frontend/src/business/automation/scenario/component/ApiComponent.vue

@@ -17,7 +17,7 @@
       :if-from-variable-advance="ifFromVariableAdvance">
 
       <template v-slot:afterTitle v-if="(request.refType==='API'|| request.refType==='CASE')">
-        <span v-if="isShowNum" @click="clickResource(request)">{{ "（ ID: " + request.num + "）" }}</span>
+        <span v-if="request.num" @click="clickResource(request)">{{ "（ ID: " + request.num + "）" }}</span>
         <span v-else>
           <el-tooltip class="ms-num" effect="dark"
                       :content="request.refType==='API'?$t('api_test.automation.scenario.api_none'):$t('api_test.automation.scenario.case_none')"