Fixes (#18354)

* Rename classification to enrichments

* Clean up config updating checks

* Add Portugese

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Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

frigate/output/preview.py

@@ -403,6 +403,7 @@ class PreviewRecorder:
             self.reset_frame_cache(frame_time)
 
     def stop(self) -> None:
+        self.config_subscriber.stop()
         self.requestor.stop()