fix: common params

Author: PeriniM

scrapegraphai/nodes/base_node.py

@@ -88,12 +88,11 @@ def update_config(self, params: dict, overwrite: bool = False):
             param (dict): The dictionary to update node_config with.
             overwrite (bool): Flag indicating if the values of node_config should be overwritten if their value is not None.
         """
-        if self.node_config is None:
-            self.node_config = {}
+        
         for key, val in params.items():
-            if hasattr(self, key) and (key not in self.node_config or overwrite):
-                self.node_config[key] = val
-                setattr(self, key, val)
+            if hasattr(self, key) and not overwrite:
+                continue
+            setattr(self, key, val)
 
     def get_input_keys(self, state: dict) -> List[str]:
         """