Simplify the logic of adding channels to the cache

twitch.py

@@ -217,9 +217,9 @@ class Twitch:
                     live_streams: List[Channel] = await self.get_live_streams(
                         selected_game, [DROPS_ENABLED_TAG]
                     )
-                    # filter out ones we already have
+                    # add them, filtering out ones we already have
-                    live_streams = [ch for ch in live_streams if ch.id not in self.channels]
                     for channel in live_streams:
+                        if channel.id not in self.channels:
                             self.channels[channel.id] = channel
                             channel.display()
                     # load points