dropship not indicating its landing

### Testmerges

#2203: '[WIP] Round Results (Internal use stuff)' by morrowwolf at commit 03d1283199 #2642: 'Debug TM - Polio Stage 1 - Identifying offending mobs' by fira at commit cf5a1bc840 #2519: 'Groundside Tweaks PR Atomized Xenomorph Changes' by PalJohnson at commit 7ad4c5ba67 #2645: 'Refactors gun, attachment, ammo, and ammo box icons to be held in separate folders per faction.' by carlarctg at commit bb0901e608 #2130: 'Removes non-combat 'click delay'' by carlarctg at commit 1a48621d42 #2446: 'Migrate alamo, normandy and escape pods to TGShuttle framework' by mullenpaul at commit 8719cb04f2

### Description of the bug

well, for some reason, sometimes dropships just don't make noise,

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

the landing sound should be playing,

### How do we reproduce this bug?

not sure, it happens every so often, but I got video proof of my most recent example
https://youtu.be/dNVRPAn2VpA

### Issue Bingo

- [ ] 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)

No source file, test, or entry point is named. Start by reviewing the linked video and investigating the dropship landing sequence and its sound behavior; reproduce the intermittent case before identifying a completion check. Done means the landing sound reliably plays when a dropship lands.

Written by the indexing model from the issue text.