Localization languageTag missing region code

Minimal reproducible example

What platform(s) does this occur on?

Web

Did you reproduce this issue in a development build?

Yes

Summary

I get the output for the languageTag for germany "de" instead of "de-DE".

import {useLocales as useLocalesExpo} from "expo-localization";

function useDeviceLocaleCodesIn_IETF_BCP_47(): string[] {
    const locales = useLocalesExpo()
    let localeCodes: string[] = [];
    for (let i=0; i<locales.length; i++) {
        let locale = locales[i];
        //locale.languageCode; // e.g. "en"
        localeCodes.push(locale.languageTag); // "de" or "de-DE"
    }
    return localeCodes;
}

[
  {
    "languageTag": "de",
    "languageCode": "de",
    "textDirection": null,
    "digitGroupingSeparator": ".",
    "decimalSeparator": ",",
    "measurementSystem": null,
    "currencyCode": null,
    "currencySymbol": null,
    "regionCode": null,
    "temperatureUnit": null
  },
  {
    "languageTag": "en-US",
    "languageCode": "en",
    "textDirection": null,
    "digitGroupingSeparator": ",",
    "decimalSeparator": ".",
    "measurementSystem": null,
    "currencyCode": null,
    "currencySymbol": null,
    "regionCode": "US",
    "temperatureUnit": "fahrenheit"
  },
  {
    "languageTag": "en",
    "languageCode": "en",
    "textDirection": null,
    "digitGroupingSeparator": ",",
    "decimalSeparator": ".",
    "measurementSystem": null,
    "currencyCode": null,
    "currencySymbol": null,
    "regionCode": null,
    "temperatureUnit": null
  }
]

Environment

expo-env-info 1.2.0 environment info: System: OS: macOS 13.4.1 Shell: 5.9 - /bin/zsh Binaries: Node: 18.19.1 - ~/.nvm/versions/node/v18.19.1/bin/node Yarn: 1.22.21 - /usr/local/bin/yarn npm: 10.2.4 - ~/.nvm/versions/node/v18.19.1/bin/npm Watchman: 2023.11.27.00 - /usr/local/bin/watchman Managers: CocoaPods: 1.14.3 - /usr/local/bin/pod SDKs: iOS SDK: Platforms: DriverKit 22.4, iOS 16.4, macOS 13.3, tvOS 16.4, watchOS 9.4 IDEs: Android Studio: 2023.1 AI-231.9392.1.2311.11076708 Xcode: 14.3.1/14E300c - /usr/bin/xcodebuild npmPackages: expo: ~50.0.17 => 50.0.17 expo-router: ~3.4.9 => 3.4.9 react: 18.2.0 => 18.2.0 react-dom: 18.2.0 => 18.2.0 react-native: 0.73.6 => 0.73.6 react-native-web: ~0.19.6 => 0.19.10 npmGlobalPackages: eas-cli: 7.4.0 Expo Workflow: managed

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Didn't find any issues with the project!

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expo / expo