address review: replace side-effect useMemo with idiomatic hooks

The former shouldComponentUpdate was re-implemented as a useMemo whose return
value was ignored, which is a misuse of useMemo (it was being used purely for
ref mutation side effects). Since the component is already wrapped in memo(),
the shallow prop compare handles re-render gating; the custom matrixify /
shouldRender logic was dead code.

Replace with:
- useMemo to clone queriesResponse (legitimate memoization)
- A prev-ref + useEffect pattern to track queriesResponse changes for render
  callbacks (safe to read refs during render when the value doesn't influence
  render output)

Drop the now-unused PrevPropsRef interface and the dead matrixify comparator.