X.U.Loggers: Make logTitlesOnScreen default to correct value
X.U.Loggers: Make logTitlesOnScreen default to correct value

To keep the behaviour of the old code, we want to fall back to the
unfocused format here, not the identity.

Fixes: cfc6a5293537a7cd61b9992c337279df5dba7628

xmonad/xmonad-contrib,xmonad/xmonad-contrib