feat: 添加导入轮询相关data属性

- 添加importPollingTimer定时器
- 添加showFailureButton失败记录按钮显示状态
- 添加currentTaskId当前任务ID
- 添加失败记录对话框相关属性(failureDialogVisible等)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

ruoyi-ui/src/views/ccdiPurchaseTransaction/index.vue

@@ -680,7 +680,20 @@ export default {
       importResultVisible: false,
       importResultContent: "",
       // 导入轮询定时器
-      importPollingTimer: null
+      importPollingTimer: null,
+      // 是否显示查看失败记录按钮
+      showFailureButton: false,
+      // 当前导入任务ID
+      currentTaskId: null,
+      // 失败记录对话框
+      failureDialogVisible: false,
+      failureList: [],
+      failureLoading: false,
+      failureTotal: 0,
+      failureQueryParams: {
+        pageNum: 1,
+        pageSize: 10
+      }
     };
   },
   created() {