add listener to better handle hotkey presses

[stonerl]

fixes #1639

[RunDevelopment]

This causes all commands to be executed twice. This can be seen with an empty chain. Make an empty chain and press F5. You'll get 2 identical errors:

You can probably just remove the hotkey handlers in ExecutionContext.tsx to fix this. I would even recommend moving your useEffect there.

Also, please use the same logic as the current hotkey handlers. This includes accounting for the current execution status, and disabling hotkeys when an alert is open. See HotkeysContext and useHotkeys.

[stonerl]

I hope it is correct now.

[RunDevelopment]

Thank you @stonerl!