fix(playout): only exclude ended file event

The webstream schedule logic seem to rely on already ended events to check if the stream running is the right one.
We should not exclude these webstream events from the schedule.

playout/libretime_playout/pypopush.py

@@ -81,7 +81,7 @@ class PypoPush(Thread):
             media_item = media_schedule[mkey]
 
             # Ignore track that already ended
-            if media_item["end"] < tnow:
+            if media_item["type"] == "file" and media_item["end"] < tnow:
                 logger.debug(f"ignoring ended media_item: {media_item}")
                 continue