Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.changeset/pagination-solid2-migration.md:
- Line 15: The changeset note references the wrong issue number for this
pagination rework. Update the release note text in the changeset entry so the
“resolves” reference matches the intended issue, replacing the current issue
identifier with `#797`. Keep the rest of the `createInfiniteScroll` summary
unchanged.

In `@packages/pagination/README.md`:
- Around line 221-223: Update the `reset()` documentation in the pagination
README to make it clear that it does not abort the underlying network request.
Reword the description around `reset()` so it says it disposes the reactive page
state and ignores any late result via the stale-request check in the pagination
flow, rather than implying the in-flight fetch is canceled. Keep the
clarification aligned with the `reset()` behavior and the `thisRequest !==
request` logic used by the page fetcher.

In `@packages/pagination/src/index.ts`:
- Around line 456-473: The request handling in the pagination fetch flow can
still update shared state after a page scope has been disposed, and synchronous
fetcher throws are not normalized. In the startRequest logic in the pagination
module, wrap fetcher(index) so sync failures become promise rejections, and add
a disposal check before any then/catch state updates so stale requests cannot
call setEnd, setFetching, setError, or reobserve after cleanup.