Various type hint improvements (#37952)

homeassistant/block_async_io.py

homeassistant/config_entries.py

homeassistant/helpers/area_registry.py

homeassistant/helpers/entityfilter.py

homeassistant/helpers/script.py

homeassistant/helpers/storage.py

homeassistant/helpers/system_info.py

homeassistant/runner.py

setup.cfg