fix(macos): prepare support for react-native-macos 0.66

[tido64]

Description

Make sure to call __apply_Xcode_12_5_M1_post_install_workaround if it is defined.

Platforms affected

• Android
• iOS
• macOS
• Windows

Test plan

npm run set-react-version canary-macos
yarn
cd example
pod install --project-directory=macos
../scripts/xcodebuild.sh macos/Example.xcworkspace build

# Also make sure iOS builds
pod install --project-directory=ios
../scripts/xcodebuild.sh ios/Example.xcworkspace build

[kelset]

just a simple question for me to learn - here you can put 0.66 already even if it's not out yet?

[kelset]

(as far as I can see, the canary macos on npm have the 0.0.0-hash format)

[tido64]

This is for pointing at the correct version of react-native to install with react-native-macos. The latter doesn't specify which version to use because it is self-contained, but I think cli complains if it cannot find react-native.