fix(接口定义): 修复环境变量显示多选的缺陷

--bug=1021727 --user=王孝刚 【项目管理】项目环境-通用配置，批量删除环境变量后，还在显示批量操作按钮
https://www.tapd.cn/55049933/s/1327256

framework/sdk-parent/frontend/src/components/environment/EnvironmentEdit.vue

@@ -449,6 +449,7 @@ export default {
         })
       }
       environment.config.commonConfig.variables.forEach(variable => {
+        delete variable.showMore;
         if (variable.type === 'CSV' && variable.files.length === 0) {
           message = this.$t('api_test.automation.csv_warning');
           return;

project-management/frontend/src/business/menu/environment/components/EnvironmentEdit.vue

@@ -449,6 +449,7 @@ export default {
         })
       }
       environment.config.commonConfig.variables.forEach(variable => {
+        delete variable.showMore;
         if (variable.type === 'CSV' && variable.files.length === 0) {
           message = this.$t('api_test.automation.csv_warning');
           return;