External keyboard numeric keypad does not substract resin on Firefox on macOS

[Andrew67]

(I fully intend to submit a PR for this but as I'll explain below it's not currently possible)

This issue appears to be a perfect storm of:

• Firefox on macOS
• External keyboard that includes numeric keypad that I just started using
• Using event.code or event.which instead of event.key for key handlers (which is what hotkeys JS does)

If you happen to have such a device on macOS you can test it out here: https://omatsuri.app/events-keycode

Basically, for e.g. 4, the top row key returns:
key: '4', code: 'Digit4', which: 52
but the numeric keypad returns (I think this matches NumLock off on Windows but macOS does not do NumLock):
key: '4', code: 'Numpad4', which: 100
Furthermore, Chrome seems to pave over this difference and returns the same as the top row key above, so it is left as a Firefox issue.

Solution:

• Upgrade to a version of react-hotkeys-hook that uses hotkeys JS 3.8.3 (it's out, but the current 3.2.1 of the hook does not use it; it's in main branch so 3.2.2 probably)
• Modify the Subtractor.tsx useHotkeys hook call to include the special key variant as defined in the library https://github.com/jaywcjlove/hotkeys/pull/254/files (4 becomes 4, num_4 for example)

[luaneko]

Interesting. I can reproduce this on my mac with Firefox, although to be honest, it's not much of an inconvenience. The number of people who use Genshin Schedule on a macOS Firefox with numpad keys is probably very, very low.

But if you intend to fix this and submit a PR anyway, I will definitely have a look!

[Andrew67]

Ready!
#56
Tested on Firefox/Edge on macOS