Removing town portal mechanic in trials of sekhemas

Fairly new player here. Dabbled in poe1 but wasn't a huge fan. Loving this game so far

I lost my 2nd trial coin (first random drop, lvl 28 trial) because I tp'd after the rattlecage fight to salvage some art shards from my inventory. I understand now this was a mistake, and to use the loot chest at the trials, but I thought it would be ok since the trial was over. Now I'm worried my character's potential is bricked since I lost 2 ascendancy points

I suggest locking the tp button while occupying the trials, in the same way it's locked while occupying an encampment