svtplay: Fix for -all-last, now starts from the last episode
svtplay: Fix for -all-last, now starts from the last episode

Fixes: https://github.com/spaam/svtplay-dl/issues/454
qnorsten/svtplay-dl,olof/svtplay-dl,qnorsten/svtplay-dl,dalgr/svtplay-dl,selepo/svtplay-dl,dalgr/svtplay-dl,selepo/svtplay-dl,spaam/svtplay-dl,spaam/svtplay-dl,olof/svtplay-dl