bugfix: focus container on output when focused
bugfix: focus container on output when focused

Focus the container on the output (not the output itself) when an output is
focused.

This is intended to fix a bug where borders are not updated correctly when
switching the vt away/back to sway.

1ace/sway,ptMuta/sway,johalun/sway,1ace/sway,taiyu-len/sway,sleep-walker/sway,1ace/sway,taiyu-len/sway,mikkeloscar/sway,ascent12/sway,taiyu-len/sway,ascent12/sway,ascent12/sway,4e554c4c/sway,mikkeloscar/sway,SirCmpwn/sway,sleep-walker/sway,4e554c4c/sway