MPAppDelegateProxy does not forward protocol conformance

[cbaltzer]

We have a React Native app that uses mParticle in combination with react-native-app-auth. Implementing this involves adding a property and a protocol to our AppDelegate.

MPAppDelegateProxy is intercepting calls to the app delegate, which is normally no problem because it forwards all selectors. However, it appears that RN checks conformsToProtocol before calling the selector, which MPAppDelegateProxy does not implement. The flow works if we add the necessary protocol to MPAppDelegateProxy directly, but that's not a workable solution as it gets overwritten any time we do a pod install (in CI/CD builds for example).

PR: #144

[einsteinx2]

This fix has just gone out with release v8.8.0: https://github.com/mParticle/mparticle-apple-sdk/releases/tag/v8.8.0