Lobby Cam Parallax is Busted

[RimiNosha]

Round ID: N/A

Testmerges:

Reproduction:

Unfortunately, this bug was unrelated to #113, so this is being made to remind me it exists outside of playtests.

Very minor, but somewhat annoying bug, basically the parallax is confined to a single 32x32 square in the bottom left, and space is left entirely dark. Not ideal.

Probably something to do with dead player init not providing screen size properly? No idea at this point.

[RimiNosha]

Update:

Players joining before server has finished parallax init breaks the parallax for them in the lobby camera.
Starlight plane isn't being applied to new player mobs.

To fix the first part, you gotta call the mob hud's update preference proc when lobby cam steals their camera.

[RimiNosha]

The parallax itself seems to be coming from a measure on TG's end. Look into how new players are given planes?