Add Intl to eslint globals.

[StasD]

Fix 'Intl' is not defined. eslint(no-undef) warning by eslint: see #27076

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[cpojer]

Thanks!

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@cpojer is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by Stanislav in f6a62f9.

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