stopTracking method
Stops tracking user activity
Implementation
@override
Future<bool> stopTracking() async {
  try {
    final bool? result = await _methodChannel.invokeMethod('stopTracking');
    return result ?? false;
  } on PlatformException catch (e) {
    if (kDebugMode) {
      print('Error stopping tracking: ${e.message}');
    }
    return false;
  }
}