fix(接口定义): 修复场景列表项目环境名称过长时环境弹框中不显示环境名称的缺陷

--bug=1021740 --user=王孝刚 【UI测试】UI场景 和 指令，项目+环境名称过长时，环境弹框中不显示环境名称
https://www.tapd.cn/55049933/s/1324648

api-test/frontend/src/business/automation/scenario/ApiScenarioList.vue

@@ -171,16 +171,19 @@
                   <span class="project-name" :title="v">{{ v }}</span
                   >:
                   <el-tag type="success" size="mini" effect="plain">
-                    <span class="project-env">{{ k }}</span>
+                    <span class="project-env" :title="k">{{ k }}</span>
                   </el-tag>
                   <br/>
                 </span>
                 <el-popover placement="top" width="350" trigger="click">
                   <div v-for="(k, v, index) in row.environmentMap" :key="index">
-                    <span class="plan-case-env"
-                      >{{ v }}: <el-tag type="success" size="mini" effect="plain">{{ k }}</el-tag
-                      ><br />
+                    <span class="plan-case-env" :title="v">{{ v }}</span
+                    >:
+                      <el-tag type="success" size="mini" effect="plain">
+                        <span class="project-env" style="margin: 0 0 0 5px" :title="k">{{ k }}
                         </span>
+                      </el-tag>
+                      <br/>
                   </div>
                   <el-link v-if="index === 1" slot="reference" type="info" :underline="false" icon="el-icon-more"/>
                 </el-popover>
@@ -1592,13 +1595,12 @@ export default {
 
 .plan-case-env {
   display: inline-block;
-  padding: 0 0;
-  max-width: 350px;
+  max-width: 250px;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
-  margin-top: 2px;
   margin-left: 5px;
+  vertical-align: bottom;
 }
 
 .project-name {