Add function to convert to a dictionary

Anthropic returns the input dictionary for the tool as a string.
Adding a function to attempt to convert it to a dict if it is a string, if conversion fails, returns the string

Author: userlerueda

libs/aws/langchain_aws/chat_models/bedrock_converse.py

@@ -411,7 +411,7 @@ def _anthropic_to_bedrock(
                 {
                     "toolUse": {
                         "toolUseId": block["id"],
-                        "input": block["input"],
+                        "input": _try_to_convert_to_dict(block["input"]),
                         "name": block["name"],
                     }
                 }
@@ -550,3 +550,12 @@ def _drop_none(obj: Any) -> Any:
         return new or None
     else:
         return obj
+
+def _try_to_convert_to_dict(tool_use_input: Any) -> Any:
+    """Attempt to convert the toolUse.input to a dictionary."""
+    if isinstance(tool_use_input, str):
+        try:
+            return json.loads(tool_use_input)
+        except json.JSONDecodeError:
+            return tool_use_input
+    return tool_use_input