[Rive][8.3.0] Verify Money next-best-action parallax (next_best_action_module_v1.riv)

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Part of #33825. Sentry: [METAMASK-MOBILE-5TM4](https://metamask.sentry.io/issues/METAMASK-MOBILE-5TM4).

## Context

New Rive surface added in 8.3.0 via #32892: a tilt-driven parallax on the Money onboarding card (`next_best_action_module_v1.riv`), continuously driven by device tilt (`useRiveNumber` updates every frame). This adds a new always-animating surface and a new mount/unmount point, increasing exposure to the worker-thread `doFrame` crash.

## What to check

- Artboards `Parallax Block 1` and `Parallax Block 2` exist and match `artboardName` usage.
- `onError` handler present, and the static-image fallback path works.
- Kill-switch flag `selectMoneyParallaxAnimationEnabledFlag` and reduce-motion guard behave correctly.
- Clean teardown when the card scrolls off-screen / unmounts while a frame is in flight (see #31076).

## Prior fix reference

- #31076 — stop rive before navigate (teardown-race pattern to apply here)

## PRs / people (no-ping)

- New surface (#32892): author `Kureev`; reviewers `Matt561`, `brianacnguyen`, `cmd-ob`

Locate the Money onboarding card implementation added by #32892 and trace next_best_action_module_v1.riv, useRiveNumber, onError, and selectMoneyParallaxAnimationEnabledFlag. Compare its lifecycle with the teardown-race pattern in #31076, then verify both artboards, the static-image fallback, reduce-motion and kill-switch behavior, and unmounting while a frame is in flight.

Written by the indexing model from the issue text.