fix(测试跟踪): 评审&&计划编辑时所属模块有误

--bug=1033829 --user=宋昌昌 【用例评审】编辑用例评审&测试计划，所属模块显示的是未规划模块 https://www.tapd.cn/55049933/s/1447144

test-track/frontend/src/business/plan/components/TestPlanEdit.vue

@@ -250,7 +250,9 @@ export default {
               buildTree(node, {path: ''});
             });
             this.treeNodes = treeNodes;
+            if (this.operationType === 'add') {
               this.setDefaultModule();
+            }
           });
     },
     setDefaultModule() {

test-track/frontend/src/business/review/components/TestCaseReviewEdit.vue

@@ -211,7 +211,9 @@ export default {
             buildTree(node, {path: ''});
           });
           this.treeNodes = treeNodes;
+          if (this.operationType === 'save') {
             this.setDefaultModule();
+          }
         });
     },
     setDefaultModule() {