fix(SortableGridList): forward ScrollView props to inner ScrollView

[yinminqian]

Description

SortableGridListProps already extends ScrollViewProps, so consumers can type props like scrollEnabled, showsVerticalScrollIndicator, keyboardShouldPersistTaps, refreshControl on <SortableGridList>. However, none of them are forwarded to the internal <ScrollView> — they are silently dropped. This is also inconsistent with SortableList, which already spreads {...others} onto its inner FlatList.

This PR makes the implementation match the public type:

• Build scrollViewProps by _.omit-ing the props that SortableGridList and useGridLayout consume directly. The grid-layout style props (style / contentContainerStyle / columnWrapperStyle) are re-applied via the computed listStyle / listContentStyle / listColumnWrapperStyle further down, so they must be excluded from the spread to avoid clobbering the layout.
• Spread {...scrollViewProps} on the inner ScrollView.
• Add a unit test that asserts scrollEnabled and showsVerticalScrollIndicator reach the inner ScrollView.

Motivation / use case

Drag-reorder UIs where the list fits on one screen need scrollEnabled={false} to prevent the inner ScrollView's scroll gesture from competing with SortableItem's long-press-drag gesture (drags near the top/bottom edge become unreliable otherwise). Today the only way to do this is via patch-package.

Closes #4002.

Changelog

SortableGridList - now forwards all ScrollView props (e.g. scrollEnabled, showsVerticalScrollIndicator, refreshControl) to its internal ScrollView, as already implied by SortableGridListProps extends ScrollViewProps.

Additional info

• Verified locally: yarn workspace react-native-ui-lib jest sortableGridList → 8/8 passing (added test included).
• yarn build:dev (TS check) passes with no new errors.
• ESLint on the changed file reports 0 errors / 0 new warnings.