Use eventloop for scheduling (#37184)

homeassistant/components/flux/switch.py

homeassistant/components/statistics/sensor.py

homeassistant/components/sun/__init__.py

homeassistant/components/tod/binary_sensor.py

homeassistant/const.py

homeassistant/helpers/event.py

homeassistant/helpers/update_coordinator.py

tests/common.py

tests/components/asuswrt/test_sensor.py

tests/components/automation/test_sun.py

tests/components/cert_expiry/test_sensors.py

tests/components/cloud/test_google_config.py

tests/components/device_tracker/test_init.py

tests/components/duckdns/test_init.py

tests/components/flux/test_switch.py

tests/components/generic_thermostat/test_climate.py

tests/components/here_travel_time/test_sensor.py

tests/components/homekit/test_accessories.py

tests/components/homekit_controller/conftest.py

tests/components/islamic_prayer_times/test_init.py