updates serializer and state_manager to deal with serialized methods

I need to get the access path from methods when generating the
web_settings.json file. Thus, methods will not be skipped anymore,
instead, the method checking if the attribute is loadable makes the
distinction.

src/pydase/data_service/state_manager.py

@@ -276,5 +276,8 @@ class StateManager:
             self.cache, full_access_path
         )
 
+        if cached_serialization_dict["value"] == "method":
+            return False
+
         # nested objects cannot be loaded
         return not serialized_dict_is_nested_object(cached_serialization_dict)

src/pydase/utils/serializer.py

@@ -363,9 +363,6 @@ def generate_serialized_data_paths(
 
     paths: list[str] = []
     for key, value in data.items():
-        if value["type"] == "method":
-            # ignoring methods
-            continue
         new_path = f"{parent_path}.{key}" if parent_path else key
         paths.append(new_path)
         if serialized_dict_is_nested_object(value):