Smartscope treats parachuting marines as potentially FFable allies

### Testmerges

#10999, #11136, #10954, #10611, #9948, #11170, #10908, #11284

### Round ID

31266

### Description of the bug

My smartscope didn't allow me to shoot under paradropping marines
Video: https://files.catbox.moe/025y1n.mp4

### What's the difference with what should have happened?

It should've allowed me to shoot under them, since I wouldn't have hit them anyway, since they're in the air. So if I wouldn't have hit them my smartscope should allow me to fire

### How do we reproduce this bug?

1. Take a gun and put smartscope on it
2. Have a 2nd marine paradrop to you so that his sprite is directly above you on your screen
3. Shoot north

### Issue Bingo

- [x] Issue could be reproduced at least once
- [x] Issue happened in a recent (less than 7 days ago) round
- [x] Couldn't find an existing issue about this (https://github.com/cmss13-devs/cmss13/issues)