Linker error with Xcode 12 and CocoaPods 1.9.3 — building for iOS, but linking in dylib file

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Progress. I can now install v1.0.0 with cocoapods without error. However I cannot build for any iOS target other than simulator. I get the error:

`ld: building for iOS, but linking in dylib file (/Users/mjc/Library/Developer/Xcode/DerivedData/test-eogwsxynjracdvgsbxwkmhvsrfzy/Build/Products/Debug-iphoneos/MapboxCommon.framework/MapboxCommon) built for iOS Simulator, file '/Users/mjc/Library/Developer/Xcode/DerivedData/test-eogwsxynjracdvgsbxwkmhvsrfzy/Build/Products/Debug-iphoneos/MapboxCommon.framework/MapboxCommon' for architecture arm64
`

I tested this by creating a new empty Xcode project and a new Podfile:

```
source 'https://github.com/CocoaPods/Specs.git'

# Uncomment the next line to define a global platform for your project
platform :ios, '12.0'

inhibit_all_warnings!

target 'test' do
use_frameworks!
pod 'MapboxNavigation', '~> 1.0'
end

```

Using Xcode 12.0.1
pod version 1.9.3

Start with the provided Podfile, the empty Xcode project, and the stated Xcode 12.0.1 and CocoaPods 1.9.3 versions. Reproduce the device build and compare it with the simulator build; done means the MapboxNavigation pod builds for an iOS target without linking a simulator-only MapboxCommon binary.

Written by the indexing model from the issue text.