[expo-av] Fixed an issue with Audio Interruption Mode not correctly being set on Android

[matt-oakes]

Why

The audio interruption mode was not correctly set when using this code:

await Audio.setAudioModeAsync({
    interruptionModeAndroid: Audio.INTERRUPTION_MODE_ANDROID_DO_NOT_MIX,
});

If you started audio in another app and then played audio in my app, it would duck the other audio, rather than interrupting it.

How

The issue was caused by the case statement incorrectly falling through due to a lack of break statement. This caused the mAudioInterruptionMode value to first be set to the correct DO_NOT_MIX value, before then being set to DUCK_OTHERS incorrectly.

Adding the break statement is all that is needed to fix the issue.

Test Plan

Tested this manually in my project.

Checklist

• Documentation is up to date to reflect these changes (eg: https://docs.expo.io and README.md).
• This diff will work correctly for expo build (eg: updated @expo/xdl).
• This diff will work correctly for expo prebuild & EAS Build (eg: updated a module plugin).

[brentvatne]

thanks! this looks right to me. cc @bbarthec

[bbarthec]

LGTM 👌