fix (breville_airrounderplus_heater): improve fan/heat logic

Previous logic worked for reflecting the state of the fan and heat modes,
but it was not really working for setting heat modes from HA.

This changes from using a value_redirect, to using conditions, which has
the side effect of setting both dps at once, but this device seems to
handle this, as it is already used in the hvac_mode.

Issue #3582

custom_components/tuya_local/devices/breville_airrounderplus_heater.yaml

@@ -36,28 +36,48 @@ entities:
         type: string
         name: heat_mode
         hidden: true
-        mapping:
-          - dps_val: heat_mid
-            value: low
-          - dps_val: heat_high
-            value: medium
-          - dps_val: heat_0
-            value: high
-          - dps_val: heat_low
-            value: "off"
-            hidden: true
       - id: 5
         type: string
         name: fan_mode
         mapping:
           - dps_val: SleepWind
-            value_redirect: heat_mode
+            constraint: heat_mode
+            conditions:
+              - dps_val: heat_mid
+                value: low
+                available: in_heat_mode
+              - dps_val: heat_high
+                value: medium
+                available: in_heat_mode
+              - dps_val: heat_0
+                value: high
+                available: in_heat_mode
+              - dps_val: heat_low
+                value: "off"
+                hidden: true
           - dps_val: NatureWind_Low
             value: low
+            available: in_fan_mode
           - dps_val: NatureWind_High
             value: medium
+            available: in_fan_mode
           - dps_val: CoolWind_0
             value: high
+            available: in_fan_mode
+      - id: 5
+        type: string
+        name: in_fan_mode
+        mapping:
+          - dps_val: SleepWind
+            value: false
+          - value: true
+      - id: 4
+        type: string
+        name: in_heat_mode
+        mapping:
+          - dps_val: heat_low
+            value: false
+          - value: true
       - id: 101
         type: string
         name: swing_mode