Enable use_environment_credentials for S3 by Default

Why it matters

This feature ensures that ClickHouse uses environment-based credentials for S3 by default, allowing seamless and secure access to S3 storage without requiring explicit credential configuration. It improves ease of use and security by leveraging the full provider chain for authentication.

How to use it

Users do not need to take any action to enable this feature as use_environment_credentials is enabled by default for S3 storage configurations.