[expo] Fix crash on v8

[Kudo]

Why

react-native-v8 app will crash on sdk 47 app

How

the NativeModules is a host object, and in react-native-v8, there are some internal data structures for a host object. after monkey patching the NativeModules, it is now a proxy object. from the Reflect.get(target, prop, receiver) call, it will use host object getter but pass the proxy object (not the original host object). the crash happens at the react-native-v8 code here

we don't return something else from the proxied interceptor; using target[prop] is enough.

Test Plan

create a v8 app and patch node_modules/expo/build/proxies/NativeModules.js

Checklist

• Documentation is up to date to reflect these changes (eg: https://docs.expo.dev and README.md).
• Conforms with the Documentation Writing Style Guide
• This diff will work correctly for expo prebuild & EAS Build (eg: updated a module plugin).