Pre-supported stem for Cute Jack-O-Lantern Pumpkin

Couldn't get my slicer to add supports properly to the stem of lopsidedflan's Cute Jack-O-Lantern Pumpkin, so I added them in myself with Tinkercad to avoid the bottom of the stem coming out goopy.

It's a 4.25mm tall ring, 12mm in outer diameter, with 0.8mm thick walls and ~0.22mm gap between the top of it and the bottom of the stem's overhang, so it should slice with just two walls and leave a small gap that makes it easily removeable. The stem itself is unchanged from the original.

All credit goes to lopsidedflan for the original design, check their design out!