Fix node.statement overload typing - default argument (#1317)

Author: cdce8p

astroid/nodes/node_ng.py

@@ -278,7 +278,9 @@ def parent_of(self, node):
         return any(self is parent for parent in node.node_ancestors())
 
     @overload
-    def statement(self) -> Union["nodes.Statement", "nodes.Module"]:
+    def statement(
+        self, *, future: Literal[None] = ...
+    ) -> Union["nodes.Statement", "nodes.Module"]:
         ...
 
     @overload

astroid/nodes/scoped_nodes/scoped_nodes.py

@@ -658,7 +658,7 @@ def fully_defined(self):
         return self.file is not None and self.file.endswith(".py")
 
     @overload
-    def statement(self) -> "Module":
+    def statement(self, *, future: Literal[None] = ...) -> "Module":
         ...
 
     # pylint: disable-next=arguments-differ