fix: handle case where keyup is not fired when meta is pressed

[Elessar1802]

In macos, while cmd (that is meta key) is pressed no other key's keyup event is fired. This PR adds a test case for same and fixes it.

fixes: https://github.com/dddice/react-keybind/issues/576

[algonzale]

Bump. I also experience this.

[tlackemann]

Oh, actually I don't have write access to this repo anymore since leaving dddice org. I'll see if I can get in touch with one of the owners of the org to get this merged in.

Thanks again.

[tapegram]

Would also like to bump this!