`rightcontrol` gets remapped to `leftcontrol` unless explicitly prevented

[postsolar]

With the following configuration

[ids]
*

[main]

Inspecting the right control with keyd monitor prints it as left control. This is further confirmed by compose key not working. I use Hyprland as my WM, and in its settings I have

input {
…
  kb_options = compose:rctrl
…
}

That didn't work until I added this to my keyd configuration:

[main]
rightcontrol = rightcontrol

Now everything works as expected, but this might be a source of confusion for other users.

[zaza42]

I have to add also:

rightshift = rightshift

for the same reason.

[jirassimok]

This caused me quite a bit of confusion when it removed VirtualBox's default host key.

Referring to #771, there is a partial solution that allows just tapping right control, while holding it acts as left control: control = overload(control, rightcontrol). Another potential solution is also outlined there if right control needs to be a separate modifier.