🙏core版本明细表引入分页组件后，不同页序号列不从1重新计算

### 🖋 Description
core版本明细表引入分页组件后，不同页序号列不从1重新计算
### 🏞 What problem does this feature solve
core目前不支持内置分页，需要引入分页组件。当使用真分页并且showSeriesNumber=true时，切换页码后每一页的序号都从1开始从新计算。希望能够在上一页的基础上继续计算序号值
### 🧐 Suggest the API

| name | type | default | description |
|----|----|----|----|
| - | - | - | - |

Start by locating the core table's showSeriesNumber implementation and how its pagination component changes the displayed rows. Reproduce the issue with true pagination across multiple pages, then verify that the sequence continues from the previous page while showSeriesNumber is enabled.

Written by the indexing model from the issue text.