Fix recursion when grouping players (#2564)

Author: MarvinSchenkel

music_assistant/models/player.py

@@ -1148,6 +1148,7 @@ def update_state(self, force_update: bool = False) -> None:
         changed_values.pop("elapsed_time_last_updated", None)
         changed_values.pop("extra_attributes.seq_no", None)
         changed_values.pop("extra_attributes.last_poll", None)
+        changed_values.pop("current_media.elapsed_time_last_updated", None)
         # persist the default name if it changed
         if self.name and self.config.default_name != self.name:
             self.mass.config.set_player_default_name(self.player_id, self.name)