chore: fix warning about appearance being called off main thread#2716

ospfranco wants to merge 2 commits intomicrosoft:mainmicrosoft/react-native-macos:mainfrom

ospfranco:oscar/fix-appareance-calling-off-main-threadospfranco/react-native-macos:oscar/fix-appareance-calling-off-main-threadCopy head branch name to clipboard