fix(测试跟踪): 脑图用例校验问题

--bug=1015664 --user=宋昌昌 【测试跟踪】脑图模式添加用例，前置条件/备注添加多个仍可以保存 https://www.tapd.cn/55049933/s/1221877

frontend/src/business/components/track/common/minder/TestCaseMinder.vue

@@ -464,6 +464,14 @@ name: "TestCaseMinder",
       let steps = [];
       let stepNum = 1;
       if (node.children) {
+        let prerequisiteNodes = node.children.filter(childNode => childNode.data.resource && childNode.data.resource.indexOf(this.$t('test_track.case.prerequisite'))  > -1);
+        if (prerequisiteNodes.length > 1) {
+          this.throwError('[' + testCase.name + ']' + this.$t('test_track.case.exists_multiple_prerequisite_node'));
+        }
+        let remarkNodes = node.children.filter(childNode => childNode.data.resource && childNode.data.resource.indexOf(this.$t('commons.remark'))  > -1);
+        if (remarkNodes.length > 1) {
+          this.throwError('[' + testCase.name + ']' + this.$t('test_track.case.exists_multiple_remark_node'));
+        }
         node.children.forEach((childNode) => {
           let childData = childNode.data;
           if (childData.type === 'issue') return;

frontend/src/i18n/en-US.js

@@ -2213,7 +2213,9 @@ export default {
         export_tip: "Switch to Case List and check Use Case Export"
       },
       case_desc: "Case Desc",
-      passing_rate: 'Case Pass Rate'
+      passing_rate: 'Case Pass Rate',
+      exists_multiple_prerequisite_node: "Exists multiple precondition node",
+      exists_multiple_remark_node: "Exists multiple remark node",
     },
     plan: {
       test_plan: "Plan",

frontend/src/i18n/zh-CN.js

@@ -2213,6 +2213,8 @@ export default {
       passing_rate: '用例通过率',
       version: "版本",
       sync_to_new_version: "复制以下信息到新版本",
+      exists_multiple_prerequisite_node: "下存在多个前置条件",
+      exists_multiple_remark_node: "下存在多个备注",
     },
     plan: {
       test_plan: "测试计划",

frontend/src/i18n/zh-TW.js

@@ -2207,6 +2207,8 @@ export default {
       case_desc: "用例描述",
       passing_rate: '用例通過率',
       sync_to_new_version: "復製以下信息到新版本",
+      exists_multiple_prerequisite_node: "下存在多個前置條件",
+      exists_multiple_remark_node: "下存在多個備註"
     },
     plan: {
       test_plan: "測試計劃",