fix: AST nodes required usage imports

modules/python/src2/typing_stubs_generation/generation.py

@@ -759,8 +759,6 @@ def _generate_typing_module(root: NamespaceNode, output_path: Path) -> None:
         output_stream.write(f'    "{alias_name}",\n')
     output_stream.write("]\n\n")
 
-    # HACK: force add cv2.mat_wrapper import to handle MatLike alias
-    required_imports.add("import cv2.mat_wrapper")
     _write_required_imports(required_imports, output_stream)
 
     # Add type checking time definitions as generated __init__.py content

modules/python/src2/typing_stubs_generation/nodes/type_node.py

@@ -561,13 +561,14 @@ class ContainerTypeNode(AggregatedTypeNode):
     @property
     def required_definition_imports(self) -> Generator[str, None, None]:
         yield "import typing"
-        return super().required_definition_imports
+        yield from super().required_definition_imports
 
     @property
     def required_usage_imports(self) -> Generator[str, None, None]:
         if TypeNode.compatible_to_runtime_usage:
             yield "import typing"
-        return super().required_usage_imports
+        yield from super().required_usage_imports
+
     @abc.abstractproperty
     def type_format(self) -> str:
         pass