Use asynctest-mock in most places (#35109)

* Use asynctest-mock in most places

* Fix broken patch in pilight

tests/components/python_script/test_init.py

@@ -1,11 +1,11 @@
 """Test the python_script component."""
 import logging
-from unittest.mock import mock_open, patch
 
 from homeassistant.components.python_script import DOMAIN, FOLDER, execute
 from homeassistant.helpers.service import async_get_all_descriptions
 from homeassistant.setup import async_setup_component
 
+from tests.async_mock import mock_open, patch
 from tests.common import patch_yaml_files