Describe the bug
When code execution has an error and displays the offending code in red, any non-quoted string in a [] in the code line is not shown.

Code to reproduce the error

from smolagents import CodeAgent, OpenAIServerModel

agent=CodeAgent(model=OpenAIServerModel("gpt-4o"), tools=[])
agent.run("""Run this exact code:
index=3
['a', 'b'][index]""")

Error logs (if any)

Code execution failed at line
    index = 3
    result = ['a', 'b']

Expected behavior
The log should be:

Code execution failed at line
    index = 3
    result = ['a', 'b'][index]

Packages version:
smolagents==1.9.2

I think this is due to Rich recognizing "[any_string]" pattern as tags