FF Tables: generated and maxLength column fields are accepted but silently ignored

[andypalmi]

Found while adding the create-database-table MCP tool (#8633).

The table body schema advertises generated and maxLength, but the driver only reads name, type, nullable and default.

Steps to reproduce

1. Create a column with { "name": "c", "type": "text", "maxLength": 50 } or { ..., "generated": true }.
2. Inspect the created table: neither field is applied. There is also no length-carrying string type (only text).

Expected

Honor the fields, or drop them from the advertised schema.

Reference

forge/ee/db/views/Table.js:27-42 (schema), driver column builder forge/ee/lib/tables/drivers/postgres-supavisor.js:361-380.