How do you stop a playlist video from looping?

How do I stop a video from looping or going back to the first video in the playlist after it ends?

Start by reproducing the playlist behavior in the Fire TV media app and trace how playlist playback is configured. The issue names no files, tests, or entry points, so first identify the playback and playlist-handling code. Done should mean a video ending does not loop or automatically return to the first playlist video.

Written by the indexing model from the issue text.