Fix: Limit images to 512x512

My Chromecast Ultra crashes when presented with cover images on the order of
5000x5000 pixels (I've not determined the actual limit, 2048x2048 is ok
though).

This sets the default size in the player queue to 512x512 which affects all
players, as well as a chromecast specific codepath. Of the other callers of
`get_image_url` airplay already sets a size of 500x500 while the slimproto and
sonos players do not set any limit.

Fixes: music-assistant/hass-music-assistant#3285

music_assistant/controllers/player_queues.py

@@ -1261,7 +1261,7 @@ def player_media_from_queue_item(self, queue_item: QueueItem, flow_mode: bool) -
                 album.name if (album := getattr(queue_item.media_item, "album", None)) else ""
             )
             if queue_item.image:
-                media.image_url = self.mass.metadata.get_image_url(queue_item.image)
+                media.image_url = self.mass.metadata.get_image_url(queue_item.image, size=512)
         return media
 
     async def get_artist_tracks(self, artist: Artist) -> list[Track]:

music_assistant/providers/chromecast/__init__.py

@@ -675,7 +675,7 @@ async def update_flow_metadata(self, castplayer: CastPlayer) -> None:
         # update metadata of current item chromecast
         if media_controller.status.media_custom_data["queue_item_id"] != current_item.queue_item_id:
             image_url = (
-                self.mass.metadata.get_image_url(current_item.image)
+                self.mass.metadata.get_image_url(current_item.image, size=512)
                 if current_item.image
                 else MASS_LOGO_ONLINE
             )