Add Default Enum ID Input for TSV and CSV Formats

Why it matters

This feature enables users to specify enum values using their internal numeric IDs when importing data in TSV and CSV formats, simplifying data ingestion and improving compatibility with systems that represent enums numerically.

How to use it

When importing TSV or CSV data, enum columns now accept their values as enum IDs without requiring additional configuration; simply provide the numeric ID directly in the input data.