I mean they let you leave so that’s on them . But I would say something incase

I would say to your SM, not your shift, "Hey, I made a mistake yesterday." (Taking accountability) "I thought I was out at 1pm, but realized after the fact that I was actually scheduled until 1:30pm. I think the shift also thought that as well, as they told me I was done, so I assumed I was...but actually wasn't. What do you need me to do?"

THIS WAY if your shift did one of those passive aggressive things that some shifts do and whine to the SM that you left early when they TOLD YOU you were done that it shows YOU made them aware of it and let them know you took accountability and want to fix it. (Seen the passive aggressive shift thing happen IRL).

Probably not