Chain Gauntlets have the chain attachment deleted when removed from bracers

## Testmerges
#9254: 'disables cade anchoring on the almayer, alternative to #9144' by psyendrocronologicalwarfare at commit 6f2fddd0df
#9405: '[EVENT] Pathogen Confluence' by realforest2001 at commit 1839861754
#9582: 'Wey-Yu Intranet Version 1.3.8' by realforest2001 at commit 7b2dfbcafc
#9590: 'Multi Z Almayer [MDB IGNORE]' by spartanbobby at commit e67f5a8b74
#9427: 'external authentication system' by hry-gh at commit 625061583c
#9717: 'pred gauntlet fix and cleanup' by Detective-Google at commit d3706c914e

## Round ID
28367

## Description of the bug
The pred chain gauntlets make use of a chain attachment that can only be fitted to the bracer-attached weapon variant of the gauntlets themselves. This attachment is deleted upon removing the gauntlets from your bracers, as it cannot be attached to the standard item version.

## What's the difference with what should have happened?
Ideally, removing the gauntlets would instead drop the chain at your feet, given it cannot be attached to them when they're not attached to your bracers.

## How do we reproduce this bug?
1) Attach chain gauntlets to your bracers
2) Activate your gauntlets and attach the chain to one of them
3) Remove your bracer attachments
4) Your chain is gone

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

## Additional details
- Author: DawsonKeyes
- Admin: Detective Google
- Note: None