Respect column insensitive column matching

Why it matters

This feature addresses the issue where column names inside tuple columns were matched in a case-sensitive manner, which could cause errors or unexpected behavior when querying. Enabling case-insensitive matching improves usability and aligns with common SQL behavior, making queries more robust and user-friendly.

How to use it

This improvement works automatically when querying tuple columns, requiring no additional configuration from users. Queries involving tuple fields will now match column names regardless of case.