fix(admin): 迁移 antd v6 弃用 API 并清理控制台警告

- Card bordered -> variant；Modal maskClosable -> mask.closable
- InputNumber addonBefore/After -> prefix/suffix；Statistic valueStyle -> styles.content
- Alert message -> title；Steps items.description -> items.content
- 移除考勤页未挂载 Form 上的 setFieldsValue，消除 useForm 警告

apps/admin/src/pages/Occupancies/OccupancyModals.tsx

@@ -212,7 +212,7 @@ export const CheckInModal: React.FC<{
                 label="押金金额"
                 rules={[{ required: true, message: '请输入押金金额' }]}
               >
-                <InputNumber min={0.01} precision={2} addonAfter="元" style={{ width: '100%' }} />
+                <InputNumber min={0.01} precision={2} suffix="元" style={{ width: '100%' }} />
               </Form.Item>
             ) : null
           }