Make functions async and add await to prepare for prettier v3 upgrade: 1/n (#52768)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/52768

Prettier v3 has an async API. This diff adds in await ahead of the upgrade to prepare for the API change.

Changelog: [Internal]

Reviewed By: pieterv

Differential Revision: D78752354

fbshipit-source-id: c0d27a6c863747b71852e72a22687d1fe1d9f76f