bug fix: 'dimming' param is not returned in progressive scenes like w…

[angadsingh]

…ake-up

I had overlooked this earlier. This seems to be an issue since the beginning. If your rhythm has a 'wake-up' scene or if you set your light to 'wake-up' or any of the 'progressive scenes', i.e. 'wake-up' or 'bedtime', then the 'dimming' param is not returned by the lights in getPilot :)

this causes an exception in pywizlight, thus causing the light to become unavailable:

2020-12-21 19:43:46 ERROR (MainThread) [homeassistant.helpers.entity] Update for light.living_room_lamp_3_wiz_a55ec9 fails
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 278, in async_update_ha_state
    await self.async_device_update()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 474, in async_device_update
    raise exc
  File "/config/custom_components/wiz_light/light.py", line 211, in async_update
    self.update_brightness()
  File "/config/custom_components/wiz_light/light.py", line 245, in update_brightness
    if self._light.state.get_brightness() is None:
  File "/config/custom_components/wiz_light/wizlight.py", line 197, in get_brightness
    return self.percent_to_hex(self.pilotResult['dimming'])
KeyError: 'dimming'

this small fix fixes this

[angadsingh]

ps: @sbidy congratulations on the first release!