feat(审批): 添加撤回审批功能并优化审批状态显示

- 在approval.js中添加withdrawApproval API方法
- 在leave.vue和goout.vue中启用撤回按钮并调用新API
- 在todo/index.vue中优化审批状态显示逻辑

klp-ui/src/views/wms/hrm/apply/leave.vue

@@ -133,7 +133,7 @@
             <el-table-column label="操作" align="center" width="160">
               <template slot-scope="scope" v-if="scope.row.approvalStatus === '待审批'">
                 <el-button icon="el-icon-edit" size="mini" @click="handleEdit(scope.row)">修改</el-button>
-                <!-- <el-button icon="el-icon-delete" size="mini" @click="handleWithdraw(scope.row)">撤回</el-button> -->
+                <el-button icon="el-icon-delete" size="mini" @click="handleWithdraw(scope.row)">撤回</el-button>
               </template>
             </el-table-column>
           </el-table>
@@ -147,7 +147,7 @@
 
 <script>
 import { getLeaveRequest, addLeaveRequest, updateLeaveRequest } from "@/api/wms/leaveRequest";
-import { listApproval, updateApproval } from "@/api/wms/approval"
+import { listApproval, updateApproval, withdrawApproval } from "@/api/wms/approval"
 import { listDept } from "@/api/wms/dept"
 import FileUpload from '@/components/FileUpload'
 import EmployeeSelector from '@/components/EmployeeSelector'
@@ -390,10 +390,8 @@ export default {
     handleWithdraw(row) {
       this.$modal.confirm('是否确认撤回请假申请编号为"' + row.applyId + '"的数据项？').then(() => {
         this.loading = true;
-        return updateApproval({
-          approvalId: row.approvalId,
-          approvalStatus: '已撤销'
-        });
+        // 撤销审批
+        return withdrawApproval(row.approvalId)
       }).then(() => {
         this.loading = false;
         this.getList();