chore: add changeset for flex-based sizing gesture fix (#878)

Author: dohooo

.changeset/fix-flex-gesture-blocking.md

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+---
+"react-native-reanimated-carousel": patch
+---
+
+# Fix gesture blocking when using flex-based sizing
+
+## Bug Fixes
+
+### Gesture Blocking with `flex: 1`
+Fixed an issue where gestures were blocked or delayed when using `style={{ flex: 1 }}` instead of explicit `width`/`height` props.
+
+**Root Cause:** Race condition between `sizeReady` (SharedValue, updates immediately on UI thread) and `size` (React state, updates asynchronously). When `sizeReady` became `true`, the React state `size` was still `0`, causing gesture handlers to incorrectly block input.
+
+**Solution:** All worklet functions now use `resolvedSize.value` (SharedValue) instead of React state `size` to ensure consistent synchronization on the UI thread.
+
+### itemWidth/itemHeight Not Working
+Fixed an issue where `itemWidth`/`itemHeight` props were being ignored - items rendered at container width instead of the specified item dimensions.
+
+**Root Cause:** `ItemLayout.tsx` was prioritizing `style.width` over `itemWidth` prop.
+
+**Solution:** Now correctly prioritizes explicit `itemWidth`/`itemHeight` props for item sizing.
+
+## Affected Files
+- `src/components/ScrollViewGesture.tsx` - Fixed race condition in gesture handlers
+- `src/components/ItemLayout.tsx` - Fixed itemWidth/itemHeight priority