fix: set-workspace does not work correctly without cursor-warp

[wilriker]

This one was haunting me now for a while until I bisected it today:

When cursor warping is disabled a combination of vwlctl set-vout-focus + vwlctl set-workspace did not load that workspace on the then focused vout but instead on the vout under the mouse cursor (which might be still somewhere else).

Adding the if below favors a set selvout over the cursor position if cursor-warping is disabled.