plat medal doesn't show up on XO service jacket

## Testmerges
#8959: 'Speech bubble update' by Blundir at commit 42361441ef
#7703: 'Hivelord Strain: Designer [Ver. 0.9]' by Venuska1117 at commit a215fde497
#7023: 'Research Rework Part Two: The Contract System.' by kiVts at commit d02ec0478a
#8569: 'SHARP Rifle Re-Revival: Triple R edition' by Blundir at commit 7e47146977
#8876: 'make mag harnesses always prefer the slot it usually snaps to, ports sticky slots from tgmc' by jupyterkat at commit 3d6626002b

## Round ID
27693

## Description of the bug
title

even if you take it off and put it back on, it doesn't show up

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

## How do we reproduce this bug?
put plat medal on service jacket

## Attached logs
```
N/A
```

## Additional details
- Author: DangerRevolution
- Admin: Luscao
- Note: Not the XO jacket, but rather the marine service jacket.

No source file or test is named. First reproduce the issue in-game by putting the platinum medal on the marine service jacket, then trace the jacket's displayed medal or accessory behavior. Done means the platinum medal appears on the jacket and remains visible after removing and re-equipping it.

Written by the indexing model from the issue text.