Kogan KAWFHTP: improve Goldair model details

Since these have the same product id, they cannot be split, but
include details for both.

PR #3309

custom_components/tuya_local/devices/kogan_kawfhtp_heater.yaml

@@ -2,7 +2,7 @@ name: Panel heater
 products:
   - id: ynjanlglr4qa6dxf
     manufacturer: Kogan / Goldair
-    model_id: NPH-2000G-WIFI
+    model_id: NPH-2000G-WIFI / GPCV340
     model: Glass panel heater
 entities:
   - entity: climate