Add Treatlife Smart Dimmer Switch to devices list (#4325)

This PR adds support for the Treatlife Smart Dimmer Switch by including its Tuya Product ID (`aahxaxzdyuriashj`) in the existing FEIT Dimmable Light definition.

The FEIT template works correctly with this device:
- Correct brightness range (10–1000)
- Correct DP mapping
- Correct on/off behavior

The Gosund dimmer template does not (brightness scaling mismatch), confirming that this Treatlife dimmer belongs with the FEIT definition.

This change simply adds the Treatlife PID to the `products` list so Tuya Local can auto-identify it.

custom_components/tuya_local/devices/feit_dimmer.yaml

@@ -6,6 +6,9 @@ products:
   - id: wfdsj5zxjwmcqezm
     manufacturer: Moes
     model: WS-SY-EUD-WH-MS
+  - id: aahxaxzdyuriashj
+    manufacturer: Treatlife
+    name: Smart Dimmer Switch
 entities:
   - entity: light
     dps: