core: Update messages/__init__.py to account for AIMessageChunk which breaks message history runnable. (#15327)

- **Description:** fix parse issue for AIMessageChunk when using 
  - **Issue:** https://github.com/langchain-ai/langchain/issues/14511
  - **Dependencies:** none
  - **Twitter handle:** none

Taken from this fix:
https://github.com/gpt-engineer-org/gpt-engineer/issues/804#issuecomment-1769853850

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---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>

libs/core/langchain_core/messages/__init__.py

@@ -82,6 +82,16 @@ def _message_from_dict(message: dict) -> BaseMessage:
         return FunctionMessage(**message["data"])
     elif _type == "tool":
         return ToolMessage(**message["data"])
+    elif _type == "AIMessageChunk":
+        return AIMessageChunk(**message["data"])
+    elif _type == "HumanMessageChunk":
+        return HumanMessageChunk(**message["data"])
+    elif _type == "FunctionMessageChunk":
+        return FunctionMessageChunk(**message["data"])
+    elif _type == "ToolMessageChunk":
+        return ToolMessageChunk(**message["data"])
+    elif _type == "SystemMessageChunk":
+        return SystemMessageChunk(**message["data"])
     else:
         raise ValueError(f"Got unexpected message type: {_type}")