fix(测试跟踪): 添加用例查看按钮

--bug=1024404 --user=宋昌昌 【测试跟踪】项目未开启测试用例自定义ID-新建用例-保存-ID显示暂无 https://www.tapd.cn/55049933/s/1353426

test-track/frontend/src/business/case/components/TestCaseList.vue

@@ -443,6 +443,12 @@ export default {
       ],
       operators: [],
       simpleOperators: [
+        {
+          tip: this.$t('commons.view'),
+          isTextButton: true,
+          exec: this.handleEdit,
+          permissions: ['PROJECT_TRACK_CASE:READ']
+        },
         {
           tip: this.$t('commons.copy'),
           isTextButton: true,