[expo] Fix Google Authentication in standalone apps (#4479)
[expo] Fix Google Authentication in standalone apps (#4479)

For some reason the previous implementation was performing this check:

```
const iosClientId = Constants.appOwnership === 'standalone' ? config.iosClientId: config.iosStandaloneAppClientId;
```

which was causing issues on a standalone app due to the incorrect clientId being used.

Swapping the keys before making the change fixed the issue. Changing the code to swap the condition will fix the issue for everyone.
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