SponsorBlockMonitor's "playing file changed mid-monitor" exit was too
aggressive on the delegation path. When torttube hands off to
plugin.video.youtube, Kodi cycles through three URLs (torttube plugin →
pv.youtube plugin → MPD on localhost:50152) before settling. If
initial_file captured an intermediate one, the next poll's current_file
tripped the exit and SponsorBlock silently stopped without skipping
anything.
Removed the check. The isPlaying() guard already covers the "player
stopped" exit; the rare "user started a different video while our
monitor is still alive" case isn't worth breaking the common path.