[BUG] Aqara plug (lumi.plug.maeu01) generates errors post-2022.2

Describe the bug I use this plug with HA 2022.2.3, where it’s been updated to use the quirk for lumi.plug.mmeu01 after this pull.

There are errors popping up in the log after this update.

Logger: homeassistant.util.logging
Source: util/logging.py:105
First occurred: 4:34:56 PM (16 occurrences)
Last logged: 4:55:26 PM

Exception in async_state_changed when dispatching 'LUMI lumi.plug.maeu01_54:ef:44:10:00:0e:52:9d_available_entity': () Traceback (most recent call last): 
 File  "/usr/src/homeassistant/homeassistant/components/zha/entity.py", line 107, in async_state_changed self.async_write_ha_state() 
 File  "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 530, in async_write_ha_state self._async_write_ha_state() 
 File  "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 563, in _async_write_ha_state state = self._stringify_state() 
 File  "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 536, in _stringify_state if (state := self.state) is None: 
 File  "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 371, in state value = self.native_value 
 File  "/usr/src/homeassistant/homeassistant/components/zha/sensor.py", line 175, in native_value return self.formatter(raw_state) 
 File  "/usr/src/homeassistant/homeassistant/components/zha/sensor.py", line 472, in formatter return self._channel.summa_formatter(value) 
 File  "/usr/src/homeassistant/homeassistant/components/zha/core/channels/smartenergy.py", line 196, in _formatter_function return self._summa_format.format(value).lstrip() AttributeError: 'NoneType' object has no attribute 'format'

To Reproduce Steps to reproduce the behavior: unknown

Additional context

{
  "node_descriptor": "NodeDescriptor(logical_type=<LogicalType.Router: 1>, complex_descriptor_available=0, user_descriptor_available=0, reserved=0, aps_flags=0, frequency_band=<FrequencyBand.Freq2400MHz: 8>, mac_capability_flags=<MACCapabilityFlags.AllocateAddress|RxOnWhenIdle|MainsPowered|FullFunctionDevice: 142>, manufacturer_code=4447, maximum_buffer_size=127, maximum_incoming_transfer_size=100, server_mask=11264, maximum_outgoing_transfer_size=100, descriptor_capability_field=<DescriptorCapability.NONE: 0>, *allocate_address=True, *is_alternate_pan_coordinator=False, *is_coordinator=False, *is_end_device=False, *is_full_function_device=True, *is_mains_powered=True, *is_receiver_on_when_idle=True, *is_router=True, *is_security_capable=False)",
  "endpoints": {
    "1": {
      "profile_id": 260,
      "device_type": "0x0051",
      "in_clusters": [
        "0x0000",
        "0x0002",
        "0x0003",
        "0x0004",
        "0x0005",
        "0x0006",
        "0x0009",
        "0x0702",
        "0x0b04"
      ],
      "out_clusters": [
        "0x000a",
        "0x0019"
      ]
    },
    "21": {
      "profile_id": 260,
      "device_type": "0x0009",
      "in_clusters": [
        "0x000c"
      ],
      "out_clusters": [
        "0x0004",
        "0x000c"
      ]
    },
    "242": {
      "profile_id": 41440,
      "device_type": "0x0061",
      "in_clusters": [],
      "out_clusters": [
        "0x0021"
      ]
    }
  },
  "manufacturer": "LUMI",
  "model": "lumi.plug.maeu01",
  "class": "zhaquirks.xiaomi.aqara.plug_mmeu01.Plug"
}

[dmulcahey]

Great now we know what the issue is. Xiaomi devices are such a pain in the ass!

[husjon]

Summation is working as expected.

Happy to help.