Fix atag slow tests (#64567)

* Fix atag slow tests

* Fix sleep fixture

tests/components/atag/conftest.py

@@ -0,0 +1,17 @@
+"""Provide common Atag fixtures."""
+import asyncio
+from unittest.mock import patch
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+async def mock_pyatag_sleep():
+    """Mock out pyatag sleeps."""
+    asyncio_sleep = asyncio.sleep
+
+    async def sleep(duration, loop=None):
+        await asyncio_sleep(0)
+
+    with patch("pyatag.gateway.asyncio.sleep", new=sleep):
+        yield