fix(data): update React Native installation instructions for DataStore Getting Started docs (#5258)

Author: david-mcafee

src/fragments/lib/datastore/react-native/getting-started/30_platformIntegration.mdx

@@ -12,7 +12,7 @@ Start with the [React Native CLI](https://reactnative.dev/docs/getting-started):
 npx [email protected] init AmplifyDataStoreRN --version 0.68.2
 cd AmplifyDataStoreRN
 npx amplify-app@latest
-npm install aws-amplify @react-native-community/netinfo @react-native-async-storage/async-storage core-js
+npm install aws-amplify amazon-cognito-identity-js @react-native-community/netinfo @react-native-async-storage/async-storage core-js
 ```
 
 You will also need to install the pod dependencies for iOS:
@@ -31,7 +31,7 @@ To enable SQLite with DataStore for enhanced local database performance, follow
 npx [email protected] init AmplifyDataStoreRN --version 0.68.2
 cd AmplifyDataStoreRN
 npx amplify-app@latest
-npm install aws-amplify @aws-amplify/datastore-storage-adapter react-native-sqlite-storage @react-native-community/netinfo @react-native-async-storage/async-storage core-js
+npm install aws-amplify amazon-cognito-identity-js @aws-amplify/datastore-storage-adapter react-native-sqlite-storage @react-native-community/netinfo @react-native-async-storage/async-storage core-js
 npx pod-install
 ```
 
@@ -61,7 +61,7 @@ Start with the [Expo CLI](https://docs.expo.dev/):
 npx create-expo-app AmplifyDataStoreExpo
 cd AmplifyDataStoreExpo
 npx amplify-app@latest
-expo install aws-amplify @react-native-community/netinfo @react-native-async-storage/async-storage
+expo install aws-amplify amazon-cognito-identity-js @react-native-community/netinfo @react-native-async-storage/async-storage
 ```
 
 **Use SQLite for enhanced performance (optional)**