Handle special users in default app check.

import android.net.Uri;

import android.os.Handler;

import android.os.IBinder;

import android.os.UserHandle;

import android.provider.Settings.Global;

import android.provider.Settings.Secure;

import android.service.notification.ZenModeConfig;

    }

    private boolean isDefaultMessagingApp(NotificationRecord record) {

        final int userId = record.getUserId();

        if (userId == UserHandle.USER_NULL || userId == UserHandle.USER_ALL) return false;

        final String defaultApp = Secure.getStringForUser(mContext.getContentResolver(),

                Secure.SMS_DEFAULT_APPLICATION, record.getUserId());

                Secure.SMS_DEFAULT_APPLICATION, userId);

        return Objects.equals(defaultApp, record.sbn.getPackageName());

    }