docs(react-native): add note about metro config

[DominicGBauer]

Description

Added a note in the docs about metro.config.js changes that need to be made to get the package to work with non-Expo React Native projects. This should hopefully avoid these issues for users in the future https://discord.com/channels/1138230179878154300/1290949501049110623 and https://discord.com/channels/1138230179878154300/1194710422960472175/1290907741568765964

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Latest commit: eceae45

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