Fix standing up from crawling

[benjaminiserman]

I'm going to deploy this fork to a private server for testing, but this fixed the issue in my initial testing for both:

• when entering crawling via a trapdoor on the main level, then crawling under a sable sublevel
• when entering crawling via a trapdoor while on a sable sublevel

[CLAassistant]

All committers have signed the CLA.

[Ocelot5836]

LGTM, will wait for further testing

[benjaminiserman]

Planning to deploy to my test server late tonight. I have a big airship with 1-block tall maintenance corridors that will be perfect for testing this. Have fallen through the floor a lot of times on the current version lol

[benjaminiserman]

So far so good with the testing, though it looks like we'll need an additional mixin to handle standing up from Create's cardboard armor. Not a blocker for this PR though.

[benjaminiserman]

Note from further testing: this change does tend to cause the player to crawl a lot when near the walls of a ship that's rotating. This is still better than players getting shunted through the floor, but it might be worth building a more advanced system for relaxing the player hitbox when sublevels aren't Y-axially aligned.

[Easyidle123]

It seems this change is responsible for being forced to crawl when the airship is moving upwards quickly as well, which is quite intrusive to gameplay