Ledkia fan: make minimum speed 0 rather than 1.

Due to floating point imprecision, settings of 1 are being rejected as out of range.
HA automatically converts 0 to "off", so we might as well let it go down to 0.

custom_components/tuya_local/devices/ledkia_fan_light.yaml

@@ -10,7 +10,7 @@ primary_entity:
       name: speed
       optional: true
       range:
-        min: 1
+        min: 0
         max: 6
       mapping:
         - scale: 0.06