Handle cancellation errors during response clone cleanup (#100961)
## Summary
A response body can fail after `fetch()` resolves, for example when an
upstream connection closes. Even if the caller catches the body-read
error, garbage-collection cleanup of an unused response clone can call
`cancel()` on its already-errored stream.
That cancellation rejects, and the existing `.then(noop)` leaves the
rejection unhandled. Depending on the runtime’s unhandled-rejection
handling, this can terminate the process.
Use `.catch(noop)` to handle cancellation failures during cleanup. The
original body-read error still reaches the caller.
Related: https://github.com/vrv/vercel-runtime-cache-cancel-repro