Merge pull request #35815 from kubabutkiewicz/ts-migration/react-navi…

…gation-mock

__mocks__/@react-navigation/native/index.js → __mocks__/@react-navigation/native/index.ts

@@ -1,7 +1,7 @@
 import {useIsFocused as realUseIsFocused} from '@react-navigation/native';
 
 // We only want this mocked for storybook, not jest
-const useIsFocused = process.env.NODE_ENV === 'test' ? realUseIsFocused : () => true;
+const useIsFocused: typeof realUseIsFocused = process.env.NODE_ENV === 'test' ? realUseIsFocused : () => true;
 
 export * from '@react-navigation/core';
 export * from '@react-navigation/native';