fix(测试跟踪): 修复保存公共用例库数据时，数据从公共用例库移除的缺陷 (#13041)

--bug=1012717 --user=王孝刚 [测试跟踪]
github#13004将用例树中的用例添加至公共用例库后，对用例库中该用例进行编辑并保存时，公共用例库中添加的用例被自动移除，功能实现有误，请修改
https://www.tapd.cn/55049933/s/1147448

Co-authored-by: wxg0103 <727495428@qq.com>

frontend/src/business/components/track/case/components/TestCaseEdit.vue

@@ -660,6 +660,7 @@ export default {
       if (!this.form.stepModel) {
         this.form.stepModel = "STEP";
       }
+      this.casePublic = tmp.casePublic;
       this.form.module = testCase.nodeId;
       //设置自定义熟悉默认值
       this.customFieldForm = parseCustomField(this.form, this.testCaseTemplate, this.customFieldRules, testCase ? buildTestCaseOldFields(this.form) : null);

frontend/src/business/components/track/case/components/TestCaseEditShow.vue

@@ -625,6 +625,7 @@ export default {
       if (!this.form.stepModel) {
         this.form.stepModel = "STEP";
       }
+      this.casePublic = tmp.casePublic;
       this.form.module = testCase.nodeId;
       //设置自定义熟悉默认值
       this.customFieldForm = parseCustomField(this.form, this.testCaseTemplate, this.customFieldRules, testCase ? buildTestCaseOldFields(this.form) : null);