Run energy db calls in the db executor (#69544)

Fixes #69537

homeassistant/components/energy/validate.py

@@ -489,7 +489,7 @@ async def async_validate(hass: HomeAssistant) -> EnergyPreferencesValidation:
 
     # Fetch the needed statistics metadata
     statistics_metadata.update(
-        await hass.async_add_executor_job(
+        await recorder.get_instance(hass).async_add_executor_job(
             functools.partial(
                 recorder.statistics.get_metadata,
                 hass,

homeassistant/components/energy/websocket_api.py

@@ -260,7 +260,7 @@ async def ws_get_fossil_energy_consumption(
     statistic_ids.append(msg["co2_statistic_id"])
 
     # Fetch energy + CO2 statistics
-    statistics = await hass.async_add_executor_job(
+    statistics = await recorder.get_instance(hass).async_add_executor_job(
         recorder.statistics.statistics_during_period,
         hass,
         start_time,