Improve blueprint test fixtures (#93519)

tests/components/script/conftest.py

@@ -1,3 +1,8 @@
 """Conftest for script tests."""
 
-from tests.components.blueprint.conftest import stub_blueprint_populate  # noqa: F401
+import pytest
+
+
+@pytest.fixture(autouse=True, name="stub_blueprint_populate")
+def stub_blueprint_populate_autouse(stub_blueprint_populate):
+    """Stub copying the blueprints to the config folder."""