fix(confortotal_minisplit): improvements to recent changes

- vswing_position_supported seems to be irrelevant for vswing, possibly
  controls whether hswing is available (Aiwa air conditioner does not
  support hswing, but does support static positions for vswing, but
  sets this option.
- Emergency heat requires heat support
- translations for fan modes require aircon_extra translation key
- if using aircon_extra, we should probably use the swing mode translations

Omitted dynamic fan mode (strong only in heat and cool modes) because
I am not sure HA will update the list of options when hvac_mode is changed.

Issue #5100

custom_components/tuya_local/devices/confortotal_minisplit.yaml

@@ -12,6 +12,7 @@ products:
     model: AWHACC
 entities:
   - entity: climate
+    translation_only_key: aircon_extra
     dps:
       - id: 1
         type: boolean
@@ -172,28 +173,25 @@ entities:
           - dps_val: same
             value: "on"
           - dps_val: vane_1
-            value: Position 1
-            available: vswing_position_supported
+            value: topmost
           - dps_val: vane_2
-            value: Position 2
-            available: vswing_position_supported
+            value: top
           - dps_val: vane_3
-            value: Position 3
-            available: vswing_position_supported
+            value: middle
           - dps_val: vane_4
-            value: Position 4
-            available: vswing_position_supported
+            value: down
           - dps_val: vane_5
-            value: Position 5
-            available: vswing_position_supported
+            value: downmost
       - id: 33
         type: boolean
         name: swing_horizontal_mode
         mapping:
           - dps_val: false
             value: "off"
+            available: vswing_position_supported
           - dps_val: true
             value: "on"
+            available: vswing_position_supported
       - id: 105
         type: boolean
         optional: true
@@ -224,11 +222,20 @@ entities:
   - entity: switch
     name: Emergency heat
     icon: "mdi:fire"
+    hidden: unavailable
     category: config
     dps:
       - id: 12
         type: boolean
         name: switch
+      - id: 105
+        type: boolean
+        optional: true
+        name: available
+        mapping:
+          - dps_val: true
+            value: false
+          - value: true
   - entity: binary_sensor
     class: problem
     category: diagnostic