Transcoding Cleanup

[TheDreadPirate]

TLDR; this issue is not a bug, per se. I'm a pretty amateur programmer, but I went down this rabbit hole learning this section of the code last night and today. After a lot of new debug logging I found that the delete segments functionality needs a lot of variables to be "true", not be null, or be non-zero for it to work. And with how live TV, and live TV transcoding, currently works to get delete segments to work with live TV will require a lot of rework in a lot of different parts of Jellyfin's code.

So don't expect a fix any time soon, but this will be my learning opportunity since this functionality is important to my setup (RAM disk for transcodes).