CAS flares can become stuck on armor until they go out.

## Testmerges
#9894: 'Multiz indicator' by Detective-Google at commit 5dbc10a0d2
#7093: 'creates ipcheck subsystem' by hry-gh at commit 2a3e40559b
#10631: 'Tacmap reopened, multiz tacmap and overwatch shipside tacmap' by cuberound at commit 7e29490ef4
#10340: 'New on_mobs for splints, bandages and blood overlays (Other changes to blood included)' by LC4492 at commit 14a671a4e4
#10485: 'VERY Limited Nest Resisting' by realforest2001 at commit 240f264f65
#10376: 'CIA Overhaul' by realforest2001 at commit ca55cdfef8
#10375: 'Corporate Bodyguard' by realforest2001 at commit f893d3da8d
#10611: 'White Antre Research Facility - Ground Map' by Steelpoint at commit 425262fc6c
#10736: 'Gender and Name and Orbit Fixes' by Drulikar at commit 9a7a05f3b1
#9774: 'Adds a minesweeper game to a bunch of interactions.' by kiVts at commit 8b87aad240
#9970: 'Small time rework to oppressor' by Red-byte3D at commit e5d4c1b6ef

## Round ID
30139

## Description of the bug
CAS flares can be lit and quick equipped on armor.

## What's the difference with what should have happened?
This feels unintended, or unexpected, and I do not recall this being normal prior.

## How do we reproduce this bug?
Have Signal flare in hand.
Light it.
Press your quick equip
Flare is now on your armor and non removable.

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

## Additional details
- Author: SASoperative
- Admin: Tysonix1
- Note: You do not need to use your quick equip hotkey, you can simply place a lit flare on your armour slot and you can remove it easily.