Revert back from energy to power sensor and solve HA 2023.3.1 issues

[robinostlund]

This solves the issues that we currently have with HA 2023.3.1

[robinostlund]

@mitch-dc here is a new PR

[northalpha]

I guess this is for following error (putting it in here for people to find it):

2023-03-03 08:47:11.368 ERROR (MainThread) [homeassistant.loader] Unexpected exception importing platform custom_components.volkswagen_we_connect_id.sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/loader.py", line 779, in get_platform
    cache[full_name] = self._import_platform(platform_name)
  File "/usr/src/homeassistant/homeassistant/loader.py", line 796, in _import_platform
    return importlib.import_module(f"{self.pkg_path}.{platform_name}")
  File "/usr/local/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/config/custom_components/volkswagen_we_connect_id/sensor.py", line 100, in <module>
    device_class=SensorDeviceClass.energy,
  File "/usr/local/lib/python3.10/enum.py", line 437, in __getattr__
    raise AttributeError(name) from None
AttributeError: energy

[TravisWilder]

fyi .. 0.1.5 and 2023.3.1 is working for me again