[🐛] [Auth] Error codes differentiation for language of environment

[ogous]

Issue

After change android emulator system language to the Turkish for testing, I figure out that auth errors code strings return different according to system language settings in Android.

For example:
[auth/email-already-in-use] code string in English,
[auth/emaıl-already-ın-use] code string in Turkish.

So it creates unstable error handling situation. I checked history and found an already stated issue #3917, it turns out closed without solution, but problem is active.

I didn't check yet if its a problem for production or for real devices too. If it is, much more annoying situation becomes.

@mikehardy added that Auth module is not open source yet in 'firebase-android-sdk'. Not sure what can be done right now but it needs to be open, especially for who works in and develops for non-English languages.

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Environment

Click To Expand

react-native info output:

 auth()
      .signInWithEmailAndPassword(email, password)
      .catch((e) => {
        switch (e.code) {
          case "auth/email-already-in-use":
         //This error code returns in English
           console.log(e.code);
            break;
          case "auth/emaıl-already-ın-use":
          //This error code returns in Turkish
           console.log(e.code);
            break;
        }
      });

• Platform that you're experiencing the issue on:
  • iOS
  • Android
  • iOS but have not tested behavior on Android
  • Android but have not tested behavior on iOS
  • Both
• react-native-firebase version you're using that has this issue:
  • 11.2.0
• Firebase module(s) you're using that has the issue:
  • Auth
• Are you using TypeScript?
  • Y & 4.0.0

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[mikehardy]

This is duplicate of #3917, having another issue open does not add value. That issue has all the relevant discussion, it needs to be pursued with firebase-android-sdk