Add tool_call_id to on_tool_error event data

Summary

This PR addresses issue #33597 by adding tool_call_id to the on_tool_error callback event data. This enables users to link tool errors to specific tool calls in stateless agent implementations, which is essential for building OpenAI-compatible APIs and tracking tool execution flows.

Problem

When streaming events using astream_events with version="v2", the on_tool_error event only included the error and input data, but lacked the tool_call_id. This made it difficult to:

• Link errors to specific tool calls in stateless agent scenarios
• Implement OpenAI-compatible APIs that require tool call tracking
• Track tool execution flows when using run_id is not sufficient

Solution

The fix adds tool_call_id propagation through the callback chain:

1. Pass tool_call_id to callbacks: Updated BaseTool.run() and BaseTool.arun() to pass tool_call_id to both on_tool_start and on_tool_error callbacks
2. Store in event stream handler: Modified _AstreamEventsCallbackHandler to store tool_call_id in run info during on_tool_start
3. Include in error events: Updated on_tool_error handler to extract and include tool_call_id in the event data

Changes

• libs/core/langchain_core/tools/base.py:

  • Pass tool_call_id to on_tool_start in both sync and async methods
  • Pass tool_call_id to on_tool_error when errors occur

• libs/core/langchain_core/tracers/event_stream.py:

  • Store tool_call_id in run info during on_tool_start
  • Extract tool_call_id from kwargs or run info in on_tool_error
  • Include tool_call_id in the on_tool_error event data

Testing

The fix was verified by:

1. Direct tool invocation: Confirmed tool_call_id appears in on_tool_error event data when calling tools directly
2. Agent integration: Tested with create_agent to ensure tool_call_id is present in error events during agent execution

# Example verification
async for event in agent.astream_events(
    {"messages": "Please demonstrate a tool error"},
    version="v2",
):
    if event["event"] == "on_tool_error":
        assert "tool_call_id" in event["data"]  # ✓ Now passes
        print(event["data"]["tool_call_id"])

Backward Compatibility

• ✅ Fully backward compatible: tool_call_id is optional (can be None)
• ✅ No breaking changes: All changes are additive
• ✅ Existing code continues to work without modification

Related Issues

Fixes #33597