[Paginate] Rename `items` / `let:pageItems` to `data` / `let:pageData`

[techniq]

Instead of using items / let:pageItems...

<Paginate items={data} } let:pageItems let:pagination>
  <Table data={pageItems} />
  <Pagination {pagination} />
</Paginate>

using data / let:pageData would work better with Table, and generally more standard.

<Paginate {data} } let:pageData let:pagination>
  <Table data={pageData} />
  <Pagination {pagination} />
</Paginate>