Import Engine from dlclivegui.temp in tests

Update tests/utils/test_utils.py to import Engine from dlclivegui.temp instead of dlclivegui.temp.engine. Aligns the test import with the package re-export or module relocation so tests reference the correct top-level import.

Author: C-Achard

tests/utils/test_utils.py

@@ -5,7 +5,7 @@
 import pytest
 
 import dlclivegui.utils.utils as u
-from dlclivegui.temp.engine import Engine  # e.g. dlclivegui/utils/engine.py
+from dlclivegui.temp import Engine
 
 pytestmark = pytest.mark.unit