Fix album and artist returning "None" rather than None for Squeezebox media player. (#144971)

* fix

* snapshot update

* cast type

homeassistant/components/squeezebox/media_player.py

@@ -6,7 +6,7 @@ from collections.abc import Callable
 from datetime import datetime
 import json
 import logging
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, cast
 
 from pysqueezebox import Server, async_discover
 import voluptuous as vol
@@ -330,22 +330,22 @@ class SqueezeBoxMediaPlayerEntity(SqueezeboxEntity, MediaPlayerEntity):
     @property
     def media_title(self) -> str | None:
         """Title of current playing media."""
-        return str(self._player.title)
+        return cast(str | None, self._player.title)
 
     @property
     def media_channel(self) -> str | None:
         """Channel (e.g. webradio name) of current playing media."""
-        return str(self._player.remote_title)
+        return cast(str | None, self._player.remote_title)
 
     @property
     def media_artist(self) -> str | None:
         """Artist of current playing media."""
-        return str(self._player.artist)
+        return cast(str | None, self._player.artist)
 
     @property
     def media_album_name(self) -> str | None:
         """Album of current playing media."""
-        return str(self._player.album)
+        return cast(str | None, self._player.album)
 
     @property
     def repeat(self) -> RepeatMode:

tests/components/squeezebox/snapshots/test_media_player.ambr

@@ -78,12 +78,8 @@
       'group_members': list([
       ]),
       'is_volume_muted': True,
-      'media_album_name': 'None',
-      'media_artist': 'None',
-      'media_channel': 'None',
       'media_duration': 1,
       'media_position': 1,
-      'media_title': 'None',
       'query_result': dict({
       }),
       'repeat': <RepeatMode.OFF: 'off'>,