fix(weave): dictification issue in the smolagents integration

[soumik12345]

Description

This PR handles the case where the dictify function fails for certain smolagents objects.

Testing

This PR was tested using the following snippet:

import weave
from smolagents import DuckDuckGoSearchTool, OpenAIServerModel, ToolCallingAgent

# Initialize Weave
weave.init(project_name="smolagents")

# Define your LLM provider supported by Smolagents
model = OpenAIServerModel(model_id="gpt-4o")

# Define a DuckDuckGo web search tool based on your query
search_tool = DuckDuckGoSearchTool()

# Define a tool-calling agent
agent = ToolCallingAgent(tools=[search_tool], model=model)
answer = agent.run(
    "Get me just the title of the page at url 'https://wandb.ai/geekyrakshit/story-illustration/reports/Building-a-GenAI-assisted-automatic-story-illustrator--Vmlldzo5MTYxNTkw'?"
)

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/approve 45e4261f14c759d59c168bc95909799b98d32d50

[wandbot-3000]

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