Table: server-driven pagination

Part of the Table feature suite tracker #3639.

**Feature area:** Rendering & performance / data source

### Problem

Astryx core `Table` only has offset-based `useTablePagination`, which paginates a client-held data array. The EPS table has **server-driven pagination** (EPS `useEPSTableServerPagination`): the table renders only the current page's rows while the server owns total count, page size, and page fetching.

### Scope

- A `useTableServerPagination` plugin (or mode) where the consumer supplies `{pageIndex, pageSize, totalCount, onPageChange}` and the table renders the given page slice without holding the full dataset.
- Loading state during page fetch (composes with the loading-state work #3964).
- Decide plugin vs. mode of `useTablePagination` (API arbitration here).

_Surfaced from the EPS -> Astryx plugin audit: EPS has Cursor / Server / Relay pagination variants; Astryx only has basic offset paging._