Fix EasingFunction type for reanimated 4

[milomord]

Motivation

We are seeing the following typescript error with reanimated 4:

node_modules/@gorhom/bottom-sheet/src/constants.ts:72:34 - error TS2694: Namespace '/node_modules/react-native-reanimated/lib/typescript/Animated"' has no exported member 'EasingFunction'.

72 const ANIMATION_EASING: Animated.EasingFunction = Easing.out(Easing.exp);
                                    ~~~~~~~~~~~~~~

Found 1 error in node_modules/@gorhom/bottom-sheet/src/constants.ts:72

This patch fixes the error by explicitly importing the type.