fix(接口测试): 修复场景删除复制的case，别的步骤的断言和前后置操作也被删除的缺陷

--bug=1020598 --user=王孝刚 [接口测试]
#20354批量勾选一个场景里面的多个case，做批量删除，会把剩余case的后置脚本和断言清空（特殊场景）
https://www.tapd.cn/55049933/s/1313090

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

@@ -2332,6 +2332,12 @@ export default {
       }
       return [];
     },
+    getAllCheckedNodes() {
+      if (this.$refs.stepTree) {
+        return this.$refs.stepTree.getCheckedNodes();
+      }
+      return [];
+    },
     checkALevelChecked() {
       let resourceIds = [];
       if (this.$refs.stepTree) {
@@ -2404,7 +2410,7 @@ export default {
         confirmButtonText: this.$t('commons.confirm'),
         callback: (action) => {
           if (action === 'confirm') {
-            this.getAllResourceIds().forEach((item) => {
+            this.getAllCheckedNodes().forEach((item) => {
               this.recursionDelete(item, this.scenarioDefinition);
             });
             this.sort();
@@ -2417,14 +2423,15 @@ export default {
         },
       });
     },
-    recursionDelete(resourceId, nodes) {
+    recursionDelete(item, nodes) {
       for (let i in nodes) {
         if (nodes[i]) {
-          if (resourceId === nodes[i].resourceId) {
+          //复制的case的断言的resourceId是一样的，所以要加上parentIndex做唯一标识
+          if (item.resourceId === nodes[i].resourceId && item.parentIndex === nodes[i].parentIndex) {
             nodes.splice(i, 1);
           } else {
             if (nodes[i].hashTree != undefined && nodes[i].hashTree.length > 0) {
-              this.recursionDelete(resourceId, nodes[i].hashTree);
+              this.recursionDelete(item, nodes[i].hashTree);
             }
           }
         }