Use Updated Android Locale API

[aarongrider]

Summary

This change migrates fetching locale information from the deprecated Android locale api to the new locale api on sdk version 30+. The old api was deprecated some time ago and should not be used.

https://developer.android.com/reference/android/content/res/Configuration#locale

Changelog

[Android] [Changed] - Use new Locale API on Android 11 (API 30)+

Test Plan

if (Platform.OS === 'android') {
  locale = NativeModules.I18nManager.localeIdentifier; // returns ex. 'EN_us'
}

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[analysis-bot]

Code analysis results:

• google-java-format found some issues. See https://github.com/google/google-java-format

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: a950634

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,957,376	+28
android	hermes	armeabi-v7a	8,490,657	+30
android	hermes	x86	9,377,591	+24
android	hermes	x86_64	9,342,906	+19
android	jsc	arm64-v8a	10,639,505	-87
android	jsc	armeabi-v7a	9,560,307	-83
android	jsc	x86	10,654,005	-85
android	jsc	x86_64	11,263,005	-86

Base commit: a950634

[lunaleaps]

@aarongrider Do you mind rebasing and resolving conflicts?

[aarongrider]

All set @lunaleaps! Let me know if you need anything else.

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@lunaleaps has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@lunaleaps merged this pull request in b7c023a.