Fix Plex client controls when connected via plex.tv resource (#37572)

homeassistant/components/plex/server.py

@@ -318,6 +318,8 @@ class PlexServer:
                 _LOGGER.debug("plex.tv resource connection successful: %s", client)
             except NotFound:
                 _LOGGER.error("plex.tv resource connection failed: %s", resource.name)
+            else:
+                client.proxyThroughServer(value=False, server=self._plex_server)
 
             self._plextv_device_cache[client_id] = client
             return client

tests/components/plex/mock_classes.py

@@ -229,6 +229,10 @@ class MockPlexClient:
         """Mock the version attribute."""
         return "1.0"
 
+    def proxyThroughServer(self, value=True, server=None):
+        """Mock the proxyThroughServer method."""
+        pass
+
     def playMedia(self, item):
         """Mock the playMedia method."""
         pass