可以使用TaskStackBuilder类构建正确的返回栈，以便在深层链接嵌套活动时能够正常工作。以下是示例代码：

Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("myapp://home"));

// Intent representing the destination screen for the link
Intent deepLinkIntent = new Intent(this, DeepLinkActivity.class);

// Use TaskStackBuilder to build the back stack
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this)
    .addParentStack(MainActivity.class)
    .addNextIntent(intent)
    .addNextIntent(deepLinkIntent);

// Get the PendingIntent containing the back stack
PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

// Set the content intent of the notification
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
    .setContentIntent(pendingIntent)
    .setSmallIcon(R.drawable.ic_notification)
    .setContentTitle("My App")
    .setContentText("New content available");

// Issue the notification
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(0, builder.build());

通过使用TaskStackBuilder类和addParentStack()方法构建正确的返回栈，即可实现深层链接嵌套活动的返回功能。