Automatically switch mpd between resume and start playing on media_play (#37854)

* Automatically switch between resume and start playing

* Fix Black issue

Weirdly when i run it i had an error `1544 files left unchanged, 3313 files failed to reformat.`
I didn't watch the commit check output afterward.

homeassistant/components/mpd/media_player.py

@@ -307,7 +307,10 @@ class MpdDevice(MediaPlayerEntity):
 
     def media_play(self):
         """Service to send the MPD the command for play/pause."""
-        self._client.pause(0)
+        if self._status["state"] == "pause":
+            self._client.pause(0)
+        else:
+            self._client.play()
 
     def media_pause(self):
         """Service to send the MPD the command for play/pause."""