Both teams performed about the same during the regular season, and it's not so clear at this moment which of these two teams will be eliminated first. In addition, there are still 2-3 games left until the end of the regular season. So there's a small chance that the Lakers and Warriors might not face each other in the play-in tournament.
That's possible as the Warriors have 3 remaining games, their ranking will go up, so they might be placed at the top 8 which means they won't be playing in a do or die game anymore. I'm sure they will do that as I think they could win the next 3 games.
Warriors next 3 games are
Trailblazers - road game
Jazz and pelicans, both home games.