[LINT] estate: clean up __init__ files

Second pass of ruff linter

Author: robal-odoo

estate/__init__.py

@@ -1 +1 @@
-from . import models
+from . import models

estate/models/__init__.py

@@ -1,4 +1,4 @@
 from . import estate_property_offer
 from . import estate_property_tag
 from . import estate_property_type
-from . import estate_property
+from . import estate_property