fix(vine_tj550_thermostat): make per hour sensors optional

These do not seem to be reported on first connect by all devices.

Issue #4064

custom_components/tuya_local/devices/vine_tj550_thermostat.yaml

@@ -538,6 +538,7 @@ entities:
     dps:
       - id: 110
         type: integer
+        optional: true
         name: sensor
         unit: min
         class: measurement
@@ -548,6 +549,7 @@ entities:
     dps:
       - id: 111
         type: integer
+        optional: true
         name: sensor
         unit: min
         class: measurement