skip functions when collecting values for variable sharing

src/Microsoft.DotNet.Interactive.Jupyter/CommandEvents/LanguageHandlers/python/coe_comm_handler.py

@@ -34,7 +34,7 @@ def handle_control_comm_msg(self, msg):
 
 
     class CommandEventHandler:
-        __exclude_types = ["<class 'module'>"]
+        __exclude_types = ["<class 'module'>", "<class 'builtin_function_or_method'>","<class 'function'>"]
 
 
         def handle_command_or_event(self, data):