Avatto TRV06: make most dps optional.

Only the two temperature ones seem to be consistently sent.

Issue #2457

custom_components/tuya_local/devices/avatto_trv06_radiatorvalve.yaml

@@ -9,6 +9,7 @@ primary_entity:
     - id: 2
       type: string
       name: hvac_mode
+      optional: true
       mapping:
         - dps_val: "off"
           value: "off"
@@ -16,6 +17,9 @@ primary_entity:
           value: heat
         - dps_val: auto
           value: auto
+        - dps_val: null
+          value: "off"
+          hidden: true
     - id: 3
       type: string
       name: hvac_action
@@ -46,4 +50,5 @@ secondary_entities:
     dps:
       - id: 7
         type: boolean
+        optional: true
         name: lock