Silvercrest kettle: invert keep warm and boil

Issue #516

custom_components/tuya_local/devices/silvercrest_kettle.yaml

@@ -15,9 +15,9 @@ primary_entity:
         - dps_val: true
           constraint: warm
           conditions:
-            - dps_val: true
-              value: Keep warm
             - dps_val: false
+              value: Keep warm
+            - dps_val: true
               value: Boil
     - id: 2
       type: integer