fix(qnect_shsi01_siren): use power class rather than plug

custom_components/tuya_local/devices/qnect_shsi01_siren.yaml

@@ -44,7 +44,7 @@ entities:
           - dps_val: "4"
             value: idle
   - entity: binary_sensor
-    class: plug
+    class: power
     category: diagnostic
     dps:
       - id: 6