fix: support reanimated 4 and add renderWindow for long carousels

[petrkonecny2]

Description

Two changes, one commit each.

fix: stop worklets capturing React elements. On Reanimated 4 the carousel crashes on mount in development with [Worklets] Cannot copy value of type FiberNode. Reanimated 4 copies everything a worklet captures to the UI thread, and three worklets captured React elements:

• AnimatedPagedView: the pan gesture read props.onScrollBeginDrag and the scroll reaction read props.onScroll, which captures all of props, including children. clampValue read childrenArray.length, which captures the array.
• useInfiniteScroll: the reaction read paddedChildrenArray.length. It runs even with infinite scroll disabled.

They now capture only the two callbacks and the slide count. Behaviour is unchanged.

perf: add renderWindow to the provider. Every slide stays mounted, so a long carousel pays for all of them on mount and runs every slide's animated styles (useInterpolateInsideCarousel, ItemAnimatedView) on each frame of a swipe. With renderWindow={2}, only the current slide and two on each side render their content. The others are empty slots of the same width, so positions, snapping and goToPage don't change.

• Opt-in: without the prop every slide stays mounted. Unmounting drops slide state, such as video playback, so existing carousels see no change.
• Re-renders: the current page reaches React only when the rounded page changes, through useAnimatedReaction, not on every frame. HeroCarouselSlide is memoized, so only slides entering or leaving the window re-render.
• Infinite scroll: the window is measured between real slides and wraps around. When the carousel jumps from the clone at the end back to the real first slide, that slide is already mounted, so there's no empty frame. The logic is in utils/isInRenderWindow.ts with unit tests.

Documented in the README provider table.

Testing

• type:check, lint, test (28 passing, 5 new) and Prettier.
• The worklet fix in an Expo SDK 57 / RN 0.86 / Reanimated 4.5.1 app on the iOS simulator: before, the carousel crashed on mount; after, it renders, swipes both ways and passes taps through to the slides.
• renderWindow is covered by the unit tests only. I haven't run it in an app with a long carousel yet, so the example app's carousels are worth a quick run with renderWindow set, especially with infinite scroll.

Related Tickets/Issues

Found while trying the library for the parishes carousel in the Ascension app.

🤖 Generated with Claude Code

📦 Published PR as canary version: 0.1.15--canary.32.a9779c8.0

✨ Test out this PR locally via:

npm install @strv/react-native-hero-carousel@0.1.15--canary.32.a9779c8.0
# or 
yarn add @strv/react-native-hero-carousel@0.1.15--canary.32.a9779c8.0