Fix to make it work with Xcode 14.3

[chimame]

Problem

I fixed two issues that were causing the sample program to not work.

1. Fixed a bug where pod install couldn't be executed properly.
2. Fixed a bug where the program wouldn't work on Xcode 14.3.

Solution

1. When executing pod install, the following error occurred.

[!] CocoaPods could not find compatible versions for pod "FBSDKLoginKit":
  In snapshot (Podfile.lock):
    FBSDKLoginKit (= 15.0.0, ~> 15.0.0)

  In Podfile:
    react-native-fbsdk-next (from `../node_modules/react-native-fbsdk-next`) was resolved to 10.1.0, which depends on
      react-native-fbsdk-next/Login (= 10.1.0) was resolved to 10.1.0, which depends on
        FBSDKLoginKit (~> 14.1.0)


You have either:
 * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`.
 * changed the constraints of dependency `FBSDKLoginKit` inside your development pod `react-native-fbsdk-next`.
   You should run `pod update FBSDKLoginKit` to apply changes you've made.

Therefore, I updated the version of react-native-fbsdk-next to the latest one, since it was managed by yarn.lock and was outdated.

2. Building React Native failed on Xcode 14.3. Therefore, we upgraded to the latest version, 0.70.8, which fixed the issue.

facebook/react-native#36739

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mikehardy]

The example app is currently managed by refresh-example.sh - so the best thing to do is to update that (as needed) and make a commit with the updates, then run it and commit the generated example, then propose that as a PR

The changes you proposed are necessary - just need to do them in a slightly different way. I'm working through that now as I also had the same "can't build the example..." issue today when looking to merge a couple PRs 😆