Fix input focus fallback issue when running with multiple regions. When a region is empty, input focus is now set to the invisible input window in the region.  This enables programs (e.g. dmenu) to correctly determine which monitor has focus.
Fix input focus fallback issue when running with multiple regions.
When a region is empty, input focus is now set to the invisible input
window in the region.  This enables programs (e.g. dmenu) to correctly
determine which monitor has focus.

conformal/spectrwm,conformal/spectrwm,conformal/spectrwm