Wrap Plex property that can make I/O requests (#35383)

* Wrap property that sometimes makes I/O requests

* Simpler solution

* Combine into single function

homeassistant/components/plex/sensor.py

@@ -85,11 +85,16 @@ class PlexSensor(Entity):
             if sess.TYPE in ["clip", "episode"]:
                 # example:
                 # "Supernatural (2005) - s01e13 - Route 666"
+
+                def sync_io_attributes(session):
+                    return (session.show(), session.seasonEpisode)
+
+                show, season_episode = await self.hass.async_add_executor_job(
+                    sync_io_attributes, sess
+                )
                 season_title = sess.grandparentTitle
-                show = await self.hass.async_add_executor_job(sess.show)
                 if show.year is not None:
                     season_title += f" ({show.year!s})"
-                season_episode = sess.seasonEpisode
                 episode_title = sess.title
                 now_playing_title = (
                     f"{season_title} - {season_episode} - {episode_title}"