Allow auth providers to influence is_active (#15557)

homeassistant/auth/__init__.py

homeassistant/auth/providers/__init__.py

homeassistant/auth/providers/homeassistant.py

homeassistant/auth/providers/insecure_example.py

homeassistant/auth/providers/legacy_api_password.py

homeassistant/scripts/auth.py

tests/auth/providers/test_homeassistant.py

tests/auth/providers/test_insecure_example.py

tests/auth/providers/test_legacy_api_password.py

tests/components/auth/test_init.py

tests/scripts/test_auth.py