fix(load): strip deprecated use_auth_token from config_kwargs
Fixes #7504

This PR resolves a compatibility error when loading datasets via `load_dataset()` using outdated arguments like `use_auth_token`.

**What was happening:**
Users passing `use_auth_token` in `load_dataset(..., use_auth_token=...)` encountered a `ValueError`: BuilderConfig ParquetConfig(...) doesn't have a 'use_auth_token' key.

**Why:**
`use_auth_token` has been deprecated and removed from config definitions (replaced by `token`), but the `load_dataset()` function still forwarded it via `**config_kwargs` to BuilderConfigs, leading to unrecognized key errors.

**Fix:**
We now intercept and strip `use_auth_token` from `config_kwargs` inside `load_dataset`, replacing it with a warning:
```python
if "use_auth_token" in config_kwargs:
    logger.warning("The 'use_auth_token' argument is deprecated. Please use 'token' instead.")
    config_kwargs.pop("use_auth_token")

```
This ensures legacy compatibility while guiding users to switch to the token argument.

Let me know if you'd prefer a deprecation error instead of a warning. Thanks!