text-splitters: Ruff autofixes (#31858)

Auto-fixes from ruff with rule `ALL`

libs/text-splitters/langchain_text_splitters/json.py

@@ -64,15 +64,14 @@ class RecursiveJsonSplitter:
         if isinstance(data, dict):
             # Process each key-value pair in the dictionary
             return {k: self._list_to_dict_preprocessing(v) for k, v in data.items()}
-        elif isinstance(data, list):
+        if isinstance(data, list):
             # Convert the list to a dictionary with index-based keys
             return {
                 str(i): self._list_to_dict_preprocessing(item)
                 for i, item in enumerate(data)
             }
-        else:
-            # Base case: the item is neither a dict nor a list, so return it unchanged
-            return data
+        # Base case: the item is neither a dict nor a list, so return it unchanged
+        return data
 
     def _json_split(
         self,
@@ -85,7 +84,7 @@ class RecursiveJsonSplitter:
         chunks = chunks if chunks is not None else [{}]
         if isinstance(data, dict):
             for key, value in data.items():
-                new_path = current_path + [key]
+                new_path = [*current_path, key]
                 chunk_size = self._json_size(chunks[-1])
                 size = self._json_size({key: value})
                 remaining = self.max_chunk_size - chunk_size