Avoid conversion of timestamps in jwt auth (#101856)

tests/auth/test_init.py

@@ -1,5 +1,6 @@
 """Tests for the Home Assistant auth module."""
 from datetime import timedelta
+import time
 from typing import Any
 from unittest.mock import patch
 
@@ -371,11 +372,15 @@ async def test_cannot_retrieve_expired_access_token(hass: HomeAssistant) -> None
     access_token = manager.async_create_access_token(refresh_token)
     assert await manager.async_validate_access_token(access_token) is refresh_token
 
+    # We patch time directly here because we want the access token to be created with
+    # an expired time, but we do not want to freeze time so that jwt will compare it
+    # to the patched time. If we freeze time for the test it will be frozen for jwt
+    # as well and the token will not be expired.
     with patch(
-        "homeassistant.util.dt.utcnow",
-        return_value=dt_util.utcnow()
-        - auth_const.ACCESS_TOKEN_EXPIRATION
-        - timedelta(seconds=11),
+        "homeassistant.auth.time.time",
+        return_value=time.time()
+        - auth_const.ACCESS_TOKEN_EXPIRATION.total_seconds()
+        - 11,
     ):
         access_token = manager.async_create_access_token(refresh_token)