fix init.py bug (#364)

# Motivation

<!-- Why is this change necessary? -->

# Content

<!-- Please include a summary of the change -->

# Testing

<!-- How was the change tested? -->

# Please check the following before marking your PR as ready for review

- [ ] I have added tests for my changes
- [ ] I have updated the documentation or added new documentation as
needed

Author: bagel897

src/codegen/sdk/python/file.py

@@ -215,7 +215,7 @@ def valid_import_names(self) -> dict[str, PySymbol | PyImport | WildcardImport[P
         another file.
         """
         if self.name == "__init__":
-            ret = {}
+            ret = super().valid_import_names
             if self.directory:
                 for file in self.directory:
                     if file.name == "__init__":