Mocking RN NativeAnimatedHelper - path has been changed

RN Animated NativeAnimatedHelper.js path has been changed since RN 0.76. The new path should be:

jest.mock('react-native/src/private/animated/NativeAnimatedHelper');

This snippet needs to be updated to mention the new and old paths.

https://github.com/react-navigation/react-navigation.github.io/blob/main/versioned_docs/version-7.x/testing.md?plain=1#L67

// Silence the warning: Animated: `useNativeDriver` is not supported because the native animated module is missing
import { jest } from '@jest/globals';

// For RN >= 0.76
jest.mock('react-native/src/private/animated/NativeAnimatedHelper');

// For RN <0.76
jest.mock('react-native/Libraries/Animated/NativeAnimatedHelper');

Open versioned_docs/version-7.x/testing.md around line 67 and review the React Native Animated mocking snippet. Update it to show the new path for RN >= 0.76 and the old path for RN < 0.76, then verify the rendered documentation clearly presents both options.