fix(auth): properly cast the PlatformException to FirebaseAuthException

[Lyokone]

Description

Currently Pigeon doesn't allow to add custom code, it is systematically replaces by

  private static Map<String, Object> wrapError(Throwable exception) {
    Map<String, Object> errorMap = new HashMap<>();
    errorMap.put("message", exception.toString());
    errorMap.put("code", exception.getClass().getSimpleName());
    errorMap.put(
        "details",
        "Cause: " + exception.getCause() + ", Stacktrace: " + Log.getStackTraceString(exception));
    return errorMap;
  }

Related Issues

closes #9394

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Breaking Change

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• Yes, this is a breaking change.
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