Don't force having a pause hotkey

[Avasam]

Is your feature request related to a problem? Please describe.
From @shenef on discord:

I'd prefer doing resets and pauses manually and don't really like having keyboard binds for them since on a 65% keyboard I run into hotkey overlap much sooner

Describe the solution you'd like
"pause" hotkey is as optional as "undo"/"redo". I'd keep "reset" as I'd rather regular users not forget it

Let's also validate that sending any command with a missing hotkey does not cause issue.

Alternatively, we could also only enforce pause if there are images that use it

Describe alternatives you've considered
N/A

Additional context