fix: allow onAnimate to trigger even when snapping to the same snap index

[aksargus]

This PR improves the react-native-bottom-sheet behavior by adding two key enhancements:

Trigger onAnimate even when snapping to the same index

Previously, onAnimate only fired when the sheet snapped to a new index.

Now, with the new enableSameSnapIndexOnAnimate prop, onAnimate is called even if the target index is the same as the current index.

This allows developers to respond to repeated snaps to the same position, improving flexibility for UI updates or callbacks.

Usage Example:
<BottomSheet
enableSameSnapIndexOnAnimate={true}
onAnimate={(fromIndex, toIndex, fromPosition) => {
if (fromPosition < -40) {
console.log("Over-drag detected, refreshing!");
handleRefresh();
}
}}
/>

Benefits:

More consistent onAnimate behavior.