fix(sundb): rename NUMBERIC typo to NUMERIC (#2136)

The column type enum had NUMBERIC("NUMBERIC",...), so a SUNDB NUMERIC
column was not recognized (size/scale formatting lost) and generated
SQL emitted the invalid token NUMBERIC. Rename to NUMERIC, matching the
DB2 sibling.

Fixes #2133

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: openai0229 <136558319+openai0229@users.noreply.github.com>