Revert UnitOfReactivePower change from iotawatt (#124393)

Revert "Change POWER_VOLT_AMPERE_REACTIVE to UnitOfReactivePower (#117153)"

This reverts commit 3e53cc175f.

homeassistant/components/iotawatt/const.py

@@ -7,6 +7,7 @@ import json
 import httpx
 
 DOMAIN = "iotawatt"
+VOLT_AMPERE_REACTIVE = "VAR"
 VOLT_AMPERE_REACTIVE_HOURS = "VARh"
 
 CONNECTION_ERRORS = (KeyError, json.JSONDecodeError, httpx.HTTPError)

homeassistant/components/iotawatt/sensor.py

@@ -23,7 +23,6 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
-    UnitOfReactivePower,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import device_registry as dr, entity_registry as er
@@ -32,7 +31,7 @@ from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 from homeassistant.util import dt as dt_util
 
-from .const import DOMAIN, VOLT_AMPERE_REACTIVE_HOURS
+from .const import DOMAIN, VOLT_AMPERE_REACTIVE, VOLT_AMPERE_REACTIVE_HOURS
 from .coordinator import IotawattUpdater
 
 _LOGGER = logging.getLogger(__name__)
@@ -90,7 +89,7 @@ ENTITY_DESCRIPTION_KEY_MAP: dict[str, IotaWattSensorEntityDescription] = {
     ),
     "VAR": IotaWattSensorEntityDescription(
         key="VAR",
-        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         icon="mdi:flash",
         entity_registry_enabled_default=False,