Jaunting mobs like revenant and slaughers jaunt movement gets their momentum messed up

[1080pCat]

Exploit Reports

• I confirm this issue is not an exploit. (Required)

BYOND Version

1645

Issue Description

if you go into space/zero g while jaunintg as rev/slaughter(likely applies to all jaunting mobs, didn't test them all), then back into gravity, you retain the odd momentum you (probably shouldn't) get in space

What did you expect to happen?

for the movement to stay the same

What happened instead?

Why is this bad/What are the consequences?

No response

Steps to reproduce the issue.

1. be a revenant/jaunting slaughter demon
2. fly into space, then back

When did the problem start happening?

this pr #27698 i belive

Extra information

No response

Relevant log output/runtime error