Cache is getting initialised even when we pass enable_cache as false to pai.config

[shamith-atomicwork]

System Info

Name: pandasai
Version: 3.0.0b11

Python 3.11

Mac OS 15.1 64GB

🐛 Describe the bug

While trying to use pandasai chat I was initializing the config with

   ```
    import pandasai as pai
    from pandasai_openai import OpenAI
    import pandas as pd
    import os

    llm = AzureOpenAI(
        api_key=OPENAI_API_KEY,
        deployment_name=DEPLOYMENT_NAME_GPT4_OMNI,
        azure_endpoint=AZURE_OPENAI_BASE_URL,
        api_version=AZURE_OPENAI_API_VERSION,
    )
    pai.config.set({"llm": llm, "enable_cache": False})
  ```

It is still creating the cache file.