Okay, so building it from xcode after you do this is not sufficient to fix the problem.
I had to build it from Android Studio for iOS once. That failed saying it needed a pod install. After doing that, it built from AS for iOS, and then it also built from Xcode for iOS.
Not really sure what the difference is there, or how it ever built on iOS in the first place after all my clean attempts if it needed a pod install, but that seems like some sort of problem?