Fix TGUI Dev Server on 514! (#71374)
Fix TGUI Dev Server on 514! (#71374)

## About The Pull Request
Makes the dev server actually work on 514 again by reverting a removal
in reloader.js!

#71161 didn't take into account that we still use 514 in their TGUI
edits. Pain.
## Why It's Good For The Game
TGUI dev server works again, this is a good thing, I think!
## Changelog
Not player facing!
Bawhoppen/-tg-station,tgstation/tgstation,Bawhoppen/-tg-station,tgstation/tgstation,Bawhoppen/-tg-station,Bawhoppen/-tg-station,Bawhoppen/-tg-station,tgstation/tgstation,tgstation/tgstation,tgstation/tgstation,Bawhoppen/-tg-station,Bawhoppen/-tg-station,Bawhoppen/-tg-station,tgstation/tgstation,tgstation/tgstation,tgstation/tgstation