Hotkey identifying improperly

## Testmerges
#12824: 'Bundles Wound Overlay Updates' by fira at commit 6b48f2d5f1
#12537: 'Atlan Station - Groundmap' by oceany-a11y at commit ed9be01957
#12721: 'Assorted Sound Fixes' by fira at commit 8b5bf0b649
#12618: 'Vanguard Passive Shield no longer regenerates when UNCONSCIOUS or INCAPACITATED, FLOORED, updated strain description.' by Venuska1117 at commit 813c96e27b
#12627: 'Tyrargo Rift (2) - Various Alterations' by Steelpoint at commit dbc4496523
#12626: 'Refurbished Combat Information Centre (2) - USS Almayer' by Steelpoint at commit 86a9778d04
#12947: 'Revert "Working multiz tacmap, round two, extra buttons"' by Rain7x at commit ea384007a4
#12989: 'Fix: Transmute' by MistChristmas at commit 5d01c7e31b
#12992: 'Fix: Not being able to cut open xenos for harvesting' by MistChristmas at commit b0e91071a7

## Round ID
35979

## Description of the bug
I noticed that MistChristmas recently did a pass on fixing two hotkeys and remembered that one of mine is also recently broken. Earlier the Numpad (.) would save as Numpad_period and now it simply saves as the normal keyboard period. I thought I'd ask if this could also be fixed.

## What's the difference with what should have happened?
Before, I would save emote *thumbsup as Numpad period, then it stopped working. I went to rebind it to fix it and it rebound as simply period (.).

## How do we reproduce this bug?
Join game after hotkeys got changed?
Hit hotkey, doesn't work.
Rebind hotkey, keybind designation changes.
Cannot use keybind.

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

## Additional details
- Author: RGBDeadSilent
- Admin: the goodwheatley
- Note: None

Start by tracing the hotkey rebinding and keybind designation path described in the issue, focusing on how Numpad period is saved and restored. Reproduce the rebind in-game with the Numpad period key; done means it is identified and stored as Numpad_period rather than the normal period and the emote hotkey works again.

Written by the indexing model from the issue text.