Fixes Italic text not work (#46094)

Summary:
Fixes https://github.com/facebook/react-native/issues/46090. cc cipolleschi

## Changelog:

[IOS] [FIXED] - Fixes Italic text not work

Pull Request resolved: https://github.com/facebook/react-native/pull/46094

Test Plan: Demo in https://github.com/facebook/react-native/issues/46090

Reviewed By: NickGerleman

Differential Revision: D61472362

Pulled By: cipolleschi

fbshipit-source-id: 8cee04c4a3bdc842a765d13e997af5063ea03a32