Another attempt to fix the Jellyfin issue

This time, we simplify the progress updates, aggressively mark tracks as
100 played if they are marked played_to_completion, and implement a hack
for Jellyfin spamming us with progress updates less than a second apart.

vrobbler/apps/scrobbles/utils.py

@@ -77,7 +77,6 @@ def check_scrobble_for_finish(
         scrobble.in_progress = False
         scrobble.is_paused = False
         scrobble.played_to_completion = True
-        scrobble.playback_position_ticks = scrobble.media_obj.run_time_ticks
         scrobble.save(
             update_fields=["in_progress", "is_paused", "played_to_completion"]
         )