Interjecting Flow playlists with manually queued tracks

I like the “listen next” option for adding tracks to the queue right after the currently playing track, which happens to be only available on Deezer. I often find songs I’d like to give a quick listen and then come back to the automatically generated playlist, so I think it’d be a good idea if there was a way to inject a track into a queue manually without interrupting the Flow playback continuing after.