Use asynctest-mock in most places (#35109)

* Use asynctest-mock in most places

* Fix broken patch in pilight

tests/util/test_async.py

@@ -1,12 +1,13 @@
 """Tests for async util methods from Python source."""
 import asyncio
 from unittest import TestCase
-from unittest.mock import MagicMock, Mock, patch
 
 import pytest
 
 from homeassistant.util import async_ as hasync
 
+from tests.async_mock import MagicMock, Mock, patch
+
 
 @patch("asyncio.coroutines.iscoroutine")
 @patch("concurrent.futures.Future")