from_utf8: Velox throws while Presto outputs for negative unicode

[peterenescu]

Description

Error handling mismatch between Velox and Presto for function from_utf8. Velox doesn't accept negative unicode values as input for said function.

Error Reproduction

Velox:

presto:di> select from_utf8(c0, c1) from (values (varbinary 'Y%ZM~(d%I=s7+#l"T.8''Qf,w0{2-_P;zLmf', -6)) t(c0, c1);
Query 20250305_215555_43636_nqej6 failed: validCodePoint Not a valid Unicode code point: -6 Top-level Expression: presto.default.from_utf8(field, cast((field_0) as BIGINT))

Presto:

presto> select from_utf8(c0, c1) from (values (varbinary 'Y%ZM~(d%I=s7+#l"T.8''Qf,w0{2-_P;zLmf', -6)) t(c0, c1);
                _col0                
-------------------------------------
 Y%ZM~(d%I=s7+#l"T.8'Qf,w0{2-_P;zLmf 
(1 row)