Text to speech reads out "Focus equals true, text equals message" when calling the method tts.speak()

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🐛 Bug Report

Text to speech reads out "Focus equals true, text equals message" when calling the method tts.speak(). It doesn't matter if focus is set to true, false or not set at all.

This issue does not appear when downgraded to 4.0.0.

Expected behaviour

Text to speech reads out only message string.

Reproduction steps

class SessionNotifier {
  final FlutterTts _flutterTts = FlutterTts();

  Future<void> notify(String message) async {
    await _flutterTts.setLanguage('en-US');
    await _flutterTts.setSpeechRate(0.5);
    await _flutterTts.speak(message, focus: true);
  }
}

Configuration

Version: 4.2.0

Platform:

• 📱 iOS not tested
• 🤖 Android